California's 31st congressional district

California's 31st congressional district is a congressional district in Los Angeles County, in the U.S. state of California. The district is located in the San Gabriel Valley.

"CA 31" redirects here. For former State Route 31, see Interstate 15 in California.

California's 31st congressional district
Interactive map of district boundaries since January 3, 2023
Representative
  Grace Napolitano
D–Norwalk
Population (2022)730,452
Median household
income		$82,631[1]
Ethnicity
Cook PVID+15[2]

From January 3, 2023, following the 2020 redistricting cycle, the district is currently represented by Democrat Grace Napolitano.

Recent results in statewide elections
Election results from statewide races
Year Office Results
1990 Governor[3] Feinstein 60.6% – 34.8%
1992 President[4] Clinton 51.7% – 32.3%
Senator[5] Boxer 48.9% – 41.1%
Senator (special)[6] Feinstein 57.7% – 33.7%
1994 Governor[7] Brown 52.7% – 43.1%
Senator[8] Feinstein 50.5% – 38.3%
1996 President[9] Clinton 65.4% – 25.8%
1998 Governor[10] Davis 71.6% – 25.3%
Senator[11] Boxer 62.1% – 34.1%
2000 President[12] Gore 69.3% – 27.4%
Senator[13] Feinstein 70.4% – 22.3%
2002 Governor[14] Davis 68.6% – 19.5%
2003 Recall[15][16] No 67.6% – 32.4%
Bustamante 58.5% – 26.5%
2004 President[17] Kerry 76.9% – 21.6%
Senator[18] Boxer 80.1% – 14.6%
2006 Governor[19] Angelides 66.8% – 26.8%
Senator[20] Feinstein 79.1% – 14.0%
2008 President[21] Obama 79.9% – 17.8%
2010 Governor[22] Brown 77.9% – 16.6%
Senator[23] Boxer 78.1% – 16.2%
2012 President[24] Obama 57.2% – 40.6%
Senator[25] Feinstein 58.7% – 41.3%
2014 Governor[26] Brown 52.1% – 47.9%
2016 President[27] Clinton 57.7% – 36.6%
Senator[28] Harris 57.2% – 42.8%
2018 Governor[29] Newsom 56.6% – 43.4%
Senator[30] Feinstein 51.2% – 48.8%
2020 President[31] Biden 58.8% – 38.9%
2021 Recall[32] No 54.8% – 45.2%
2022 Governor[33] Newsom 58.4 - 41.6%
Senator Padilla 60.7 - 39.3%

Composition
# County Seat Population
37 Los Angeles Los Angeles 9,829,544

As of the 2020 redistricting, California's 31st congressional district is located in Southern California. It takes up part of eastern Los Angeles County.

Los Angeles County is split between this district, the 28th district, the 34th district, and the 38th district. The 31st and the 28th are partitioned by Rio Hondo River, Garvey Ave, Highway 19, Highway 10, Eaton Wash, Temple City Blvd, Valley Blvd, Ellis Ln, Lower Azusa Rd, Grande Ave, Santa Anita Ave, Lynrose St, Flood Control Basin, Peck Rd, Randolph St, Cogswell Rd, Clark St, Durfree Ave, Santa Anita Wash, S 10th Ave, Jeffries Ave, Mayflower/Fairgreen Ave, Alta Vista/Fairgreen Ave, El Norte Ave, S 5th Ave, Valencia Way/N 5th Ave, Hillcrest Blvd, E Hillcrest Blvd, Grand Ave, E Greystone Ave, N Bradoaks Ave, Angeles National Forest, W Fork Rd, Highway 39, Cedar Creek, Iron Fork, Glendora Mountain Rd, Morris Reservoir, W Sierra Madre Ave, N Lorraine Ave, E Foothill Blvd, E Carroll Ave, Steffen St, S Lorraine Ave, AT and SF Railway, E Route 66, N Cataract Ave, San Dimas Canyon Rd, Clayton Ct, Live Oak Canyon, Rotary Dr, Highway 30, Williams Ave, Highway 210, Garey Ave, and Summer Ave.

The 31st, 35th, and 38th are partitioned by Whittier Narrows Recreation Area, N Lexington-Gallatin Rd, N Durfree Ave, E Thienes Ave, E Rush St, N Burkett Rd, Cunningham Dr, Eaglemont Dr, Oakman Dr, Arciero Dr, Grossmont Dr, Workman Mill Rd, Bunbury Dr, Fontenoy Ave, Ankerton, Whittier Woods Circle, Union Pacific Railroad, San Gabriel Freeway, N Peck Rd, Mission Mill Rd, Rose Hills Rd, Wildwood Dr, Clark Ave, San Jose Creek, Turnbull Canyon Rd, E Gale Ave, Pomona Freeway, Colima Rd, E Walnut Dr N, Nogales St, E Walnut Dr S, Fairway Dr, E Valley Blvd, Calle Baja, La Puente Rd, S Sentous Ave, N Nogales St, Amar Rd, Walnut City Parkland, San Bernardino Freeway, Fairplex Dr, Via Verde, Puddingstone Reservoir, McKinley Ave, N Whittle Ave, Arrow Highway, Fulton Rd, and Foothill Blvd. The 31st district takes in the cities of El Monte, West Covina, Baldwin Park, Azusa, Monrovia, San Dimas, La Verne, Duarte, South El Monte, and the south side of Glendora.

Cities and CDPs with 10,000 or more people

List of members representing the district
Member Party Dates Cong
ress(es)		 Electoral history Counties
District created January 3, 1963

Charles H. Wilson
(Hawthorne)		 Democratic January 3, 1963 –
January 3, 1981		 88th
89th
90th
91st
92nd
93rd
94th
95th
96th		 Elected in 1962.
Re-elected in 1964.
Re-elected in 1966.
Re-elected in 1968.
Re-elected in 1970.
Re-elected in 1972.
Re-elected in 1974.
Re-elected in 1976.
Re-elected in 1978.
Lost re-nomination.		 1963–1969
Los Angeles
1969–1973
Los Angeles
1973–1975
Los Angeles
1975–1983
Los Angeles

Mervyn M. Dymally
(Compton)		 Democratic January 3, 1981 –
January 3, 1993		 97th
98th
99th
100th
101st
102nd		 Elected in 1980.
Re-elected in 1982.
Re-elected in 1984.
Re-elected in 1986.
Re-elected in 1988.
Re-elected in 1990.
Retired.
1983–1993
Los Angeles (Carson, Compton)

Matthew G. Martínez
(Monterey Park)		 Democratic January 3, 1993 –
July 27, 2000		 103rd
104th
105th
106th		 Redistricted from the 30th district and re-elected in 1992.
Re-elected in 1994.
Re-elected in 1996.
Re-elected in 1998.
Lost re-nomination.		 1993–2003
Los Angeles (Baldwin Park, East L.A.)
Republican July 27, 2000 –
January 3, 2001		 106th Switched to Republican Party after losing re-nomination.

Hilda Solis
(El Monte)		 Democratic January 3, 2001 –
January 3, 2003		 107th Elected in 2000.
Redistricted to the 32nd district.

Xavier Becerra
(Los Angeles)		 Democratic January 3, 2003 –
January 3, 2013		 108th
109th
110th
111th
112th		 Redistricted from the 30th district and re-elected in 2002.
Re-elected in 2004.
Re-elected in 2006.
Re-elected in 2008.
Re-elected in 2010.
Redistricted to the 34th district.		 2003–2013

Los Angeles (Hollywood, Northeast L.A.)

Gary Miller
(Diamond Bar)		 Republican January 3, 2013 –
January 3, 2015		 113th Redistricted from the 42nd district and re-elected in 2012.
Retired.		 2013–2023

Inland Empire including San Bernardino and Rancho Cucamonga

Pete Aguilar
(Redlands)		 Democratic January 3, 2015 –
January 3, 2023		 114th
115th
116th
117th		 Elected in 2014.
Re-elected in 2016.
Re-elected in 2018.
Re-elected in 2020.
Redistricted to the 33rd district.

Grace Napolitano
(Norwalk)		 Democratic January 3, 2023 –
present		 118th Redistricted from the 32nd district and re-elected in 2022.
Retiring at end of term.		 2023–present

Arcadia, El Monte, Baldwin Park, Duarte, West Covina, Covina, Azusa, southern Glendora, and most of Ramona in eastern Los Angeles County

Election results

1962 • 1964 • 1966 • 1968 • 1970 • 1972 • 1974 • 1976 • 1978 • 1980 • 1982 • 1984 • 1986 • 1988 • 1990 • 1992 • 1994 • 1996 • 1998 • 2000 • 2002 • 2004 • 2006 • 2008 • 2010 • 2012 • 2014 • 2016 • 2018 • 2020 • 2022

1962
1962 United States House of Representatives elections in California[34]
Party Candidate Votes %
Democratic Charles H. Wilson (Incumbent) 76,631 52.2
Republican Gordon Hahn 70,154 47.8
Total votes 146,785 100.0
Democratic win (new seat)

1964
1964 United States House of Representatives elections in California[35]
Party Candidate Votes %
Democratic Charles H. Wilson (Incumbent) 114,246 64.0
Republican Norman G. Shanahan 64,256 36.0
Total votes 178,502 100.0
Democratic hold

1966
1966 United States House of Representatives elections in California[36]
Party Candidate Votes %
Democratic Charles H. Wilson (Incumbent) 92,875 63.4
Republican Norman G. Shanahan 53,708 36.6
Total votes 146,583 100.0
Democratic hold

1968
1968 United States House of Representatives elections in California[37]
Party Candidate Votes %
Democratic Charles H. Wilson (Incumbent) 94,387 58.9
Republican James R. Dunn 62,711 39.1
American Independent Stanley L. Schulte 3,134 2.0
Total votes 160,232 100.0
Democratic hold

1970
1970 United States House of Representatives elections in California[38]
Party Candidate Votes %
Democratic Charles H. Wilson (Incumbent) 102,071 73.2
Republican Fred L. Casmir 37,416 26.8
Total votes 139,487 100.0
Democratic hold

1972
1972 United States House of Representatives elections in California[39]
Party Candidate Votes %
Democratic Charles H. Wilson (Incumbent) 85,954 52.3
Republican Ben Valentine 69,876 42.5
Peace and Freedom Roberta Lynn Wood 8,582 5.2
Total votes 164,412 100.0
Democratic hold

1974
1974 United States House of Representatives elections in California[40]
Party Candidate Votes %
Democratic Charles H. Wilson (Incumbent) 60,560 70.5
Republican Norman A. Hodges 23,039 26.8
Peace and Freedom William C. Taylor 2,349 2.7
Total votes 85,948 100.0
Democratic hold

1976
1976 United States House of Representatives elections in California[41]
Party Candidate Votes %
Democratic Charles H. Wilson (Incumbent) 83,155 100.0
Democratic hold

1978
1978 United States House of Representatives elections in California[42]
Party Candidate Votes %
Democratic Charles H. Wilson (Incumbent) 55,667 67.8
Republican Don Grimshaw 26,490 32.2
Total votes 82,157 100.0
Democratic hold

1980
1980 United States House of Representatives elections in California[43]
Party Candidate Votes %
Democratic Mervyn M. Dymally 69,146 64.4
Republican Don Grimshaw 38,203 35.6
Total votes 107,349 100.0
Democratic hold

1982
1982 United States House of Representatives elections in California[44]
Party Candidate Votes %
Democratic Mervyn M. Dymally (Incumbent) 86,718 72.4
Republican Henry C. Minturn 33,043 27.6
Total votes 119,761 100.0
Democratic hold

1984
1984 United States House of Representatives elections in California[45]
Party Candidate Votes %
Democratic Mervyn M. Dymally (Incumbent) 100,658 70.7
Republican Henry C. Minturn 41,691 29.3
Total votes 142,349 100.0
Democratic hold

1986
1986 United States House of Representatives elections in California[46]
Party Candidate Votes %
Democratic Mervyn M. Dymally (Incumbent) 77,126 70.3
Republican Jack McMurray 30,322 27.6
Peace and Freedom B. Kwaku Duren 2,333 2.1
Total votes 109,781 100.0
Democratic hold

1988
1988 United States House of Representatives elections in California[47]
Party Candidate Votes %
Democratic Mervyn M. Dymally (Incumbent) 100,919 71.6
Republican Arnold C. May 36,017 25.5
Peace and Freedom B. Kwaku Duren 4,091 2.9
Total votes 151,027 100.0
Democratic hold

1990
1990 United States House of Representatives elections in California[48]
Party Candidate Votes %
Democratic Mervyn M. Dymally (Incumbent) 56,394 67.1
Republican Eunice N. Sato 27,593 32.9
Total votes 83,987 100.0
Democratic hold

1992
1992 United States House of Representatives elections in California[49]
Party Candidate Votes %
Democratic Matthew G. Martínez (Incumbent) 68,324 62.6
Republican Reuben D. Franco 40,873 37.4
Total votes 109,197 100.0
Democratic hold

1994
1994 United States House of Representatives elections in California[50]
Party Candidate Votes %
Democratic Matthew G. Martínez (Incumbent) 50,541 59.1
Republican John V. Flores 34,926 40.9
Total votes 85,467 100.0
Democratic hold

1996
1996 United States House of Representatives elections in California[51]
Party Candidate Votes %
Democratic Matthew G. Martínez (Incumbent) 69,285 67.5
Republican John Flores 28,705 28.0
Libertarian Michael Everling 4,700 4.5
Total votes 102,690 100.0
Democratic hold

1998
1998 United States House of Representatives elections in California[52]
Party Candidate Votes %
Democratic Matthew G. Martínez (Incumbent) 61,173 70.0
Republican Frank C. Moreno 19,786 22.7
Green Krista Lieberg-Wong 4,377 5.0
Libertarian Michael B. Everling 1,121 1.3
Natural Law Gary Hearne 903 1.03
Total votes 87,360 100.0
Democratic hold

2000
2000 United States House of Representatives elections in California[53]
Party Candidate Votes %
Democratic Hilda Solis 89,600 79.4
Green Krista Lieberg-Wong 10,294 9.1
Libertarian Michael McGuire 7,138 6.3
Natural Law Richard D. Griffin 5,882 5.2
Total votes 112,914 100.0
Democratic gain from Republican

2002
2002 United States House of Representatives elections in California[54]
Party Candidate Votes %
Democratic Xavier Becerra (Incumbent) 54,569 81.2
Republican Luis Vega 12,674 18.8
Total votes 67,243 100.0
Democratic hold

2004
2004 United States House of Representatives elections in California[55]
Party Candidate Votes %
Democratic Xavier Becerra (Incumbent) 89,363 80.3
Republican Luis Vega 22,048 19.7
Total votes 111,411 100.0
Democratic hold

2006
2006 United States House of Representatives elections in California[56]
Party Candidate Votes %
Democratic Xavier Becerra (Incumbent) 64,952 100.0
Democratic hold

2008
2008 United States House of Representatives elections in California[57]
Party Candidate Votes %
Democratic Xavier Becerra (Incumbent) 110,955 100.0
Democratic hold

2010
2010 United States House of Representatives elections in California[58]
Party Candidate Votes %
Democratic Xavier Becerra (Incumbent) 76,363 83.8
Republican Stephen C. Smith 14,740 16.2
Total votes 91,103 100.0
Democratic hold

2012
2012 United States House of Representatives elections in California[59]
Party Candidate Votes %
Republican Gary Miller (Incumbent) 88,964 55.2
Republican Robert Dutton 72,255 44.8
Total votes 161,219 100.0
Republican hold

2014
2014 United States House of Representatives elections in California[60]
Party Candidate Votes %
Democratic Pete Aguilar 51,622 51.7
Republican Paul Chabot 48,162 48.3
Total votes 99,784 100.0
Democratic gain from Republican

2016
2016 United States House of Representatives elections in California[61]
Party Candidate Votes %
Democratic Pete Aguilar (Incumbent) 121,070 56.1
Republican Paul Chabot 94,866 43.9
Total votes 215,936 100.0
Democratic hold

2018
2018 United States House of Representatives elections in California[62]
Party Candidate Votes %
Democratic Pete Aguilar (Incumbent) 110,343 58.7
Republican Sean Flynn 77,352 41.3
Total votes 187,695 100.0
Democratic hold

2020
2020 United States House of Representatives elections in California
Party Candidate Votes %
Democratic Pete Aguilar (Incumbent) 175,315 61.3
Republican Agnes Gibboney 110,735 38.7
Total votes 286,045 100
Democratic hold

2022
2022 United States House of Representatives elections in California
Party Candidate Votes %
Democratic Grace Napolitano (Incumbent) 91,472 59.5
Republican Daniel Bocic Martinez 62,153 40.5
Total votes 153,625 100.0
Democratic hold

Historical district boundaries

Formerly, from 2003 to 2013, the district was located in Los Angeles County. It was the only congressional district entirely based within the City of Los Angeles, and included Hollywood and some predominantly Hispanic/Latino sections of central and northeast Los Angeles.

See also

References
  1. US Census
  2. "2022 Cook PVI: District Map and List". Cook Political Report. Retrieved January 10, 2023.
  3. Statement of Vote (1990 Governor)
  4. Statement of Vote (1992 President)
  5. Statement of Vote (1992 Senate)
  6. Statement of Vote (1992 Senate)
  7. Statement of Vote (1994 Governor)
  8. Statement of Vote (1994 Senate)
  9. Statement of Vote (1996 President)
  10. Statement of Vote (1998 Governor) Archived September 29, 2011, at the Wayback Machine
  11. Statement of Vote (1998 Senate) Archived September 29, 2011, at the Wayback Machine
  12. Statement of Vote (2000 President)
  13. Statement of Vote (2000 Senator)
  14. Statement of Vote (2002 Governor)
  15. Statement of Vote (2003 Recall Question)
  16. Statement of Vote (2003 Governor)
  17. Statement of Vote (2004 President)
  18. Statement of Vote (2004 Senator)
  19. Statement of Vote (2006 Governor)
  20. Statement of Vote (2006 Senator)
  21. Statement of Vote (2008 President)
  22. Statement of Vote (2010 Governor)
  23. Statement of Vote (2010 Senator)
  24. Statement of Vote (2012 President)
  25. Statement of Vote (2012 Senator)
  26. Statement of Vote (2014 Governor)
  27. Statement of Vote (2016 President)
  28. Statement of Vote (2016 Senator)
  29. Statement of Vote (2018 Governor)
  30. Statement of Vote (2018 Senator)
  31. "Daily Kos Elections' presidential results by congressional district for 2020, 2016, and 2012".
  32. "Counties by Congressional District for Recall Question" (PDF). sos.ca.gov. September 14, 2021. Retrieved May 2, 2022.
  33. "Counties by Congressional Districts for Governor" (PDF). sos.ca.gov. November 8, 2022. Retrieved May 4, 2023.
  34. 1962 election results
  35. 1964 election results
  36. 1966 election results
  37. 1968 election results
  38. 1970 election results
  39. 1972 election results
  40. 1974 election results
  41. 1976 election results
  42. 1978 election results
  43. 1980 election results
  44. 1982 election results
  45. 1984 election results
  46. 1986 election results
  47. 1988 election results
  48. 1990 election results
  49. 1992 election results
  50. 1994 election results
  51. 1996 election results
  52. 1998 election results
  53. 2000 election results
  54. 2002 election results
  55. 2004 election results
  56. 2006 election results
  57. 2008 election results
  58. 2010 election results
  59. 2012 election results
  60. 2014 election results
  61. 2016 election results
  62. 2018 election results

34°06′36″N 117°21′12″W

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