Lyon County, Nevada

• Washoe County - north
• Storey County - northwest
• Churchill County - east
• Douglas County - west
• Carson City - west
• Mineral County - southeast
• Mono County, California - southwest

As of the census[11] of 2000, there were 34,501 people, 13,007 households, and 9,443 families living in the county. The population density was 17 people per square mile (6.6 people/km²). There were 14,279 housing units at an average density of 7 units per square mile (2.7/km²). The racial makeup of the county was 88.62% White, 0.65% Black or African American, 2.45% Native American, 0.61% Asian, 0.14% Pacific Islander, 4.59% from other races, and 2.94% from two or more races. 10.97% of the population were Hispanic or Latino of any race.

There were 13,007 households, out of which 33.20% had children under the age of 18 living with them, 58.40% were married couples living together, 9.10% had a female householder with no husband present, and 27.40% were non-families. 21.40% of all households were made up of individuals, and 8.30% had someone living alone who was 65 years of age or older. The average household size was 2.61 and the average family size was 3.02.

In the county, the population was spread out, with 27.10% under the age of 18, 6.60% from 18 to 24, 27.30% from 25 to 44, 25.20% from 45 to 64, and 13.70% who were 65 years of age or older. The median age was 38 years. For every 100 females, there were 102.50 males. For every 100 females age 18 and over, there were 100.00 males.

The median income for a household in the county was $40,699, and the median income for a family was $44,887. Males had a median income of $34,034 versus $25,914 for females. The per capita income for the county was $18,543. About 7.20% of families and 10.40% of the population were below the poverty line, including 14.10% of those under age 18 and 7.10% of those age 65 or over.

From 2000 until 2008, Lyon County was one of the fastest-growing counties in the United States.[12] However, its growth rate collapsed during 2008.[13]

As of the 2010 United States Census, there were 51,980 people, 19,808 households, and 14,137 families living in the county.[14] The population density was 26.0 inhabitants per square mile (10.0/km²). There were 22,547 housing units at an average density of 11.3 units per square mile (4.4 units/km²).[15] The racial makeup of the county was 85.0% white, 2.5% American Indian, 1.4% Asian, 0.8% black or African American, 0.3% Pacific islander, 6.4% from other races, and 3.7% from two or more races. Those of Hispanic or Latino origin made up 14.8% of the population.[14] In terms of ancestry, 20.0% were German, 18.5% were English, 15.5% were Irish, 5.9% were Italian, and 5.3% were American.[16]

Of the 19,808 households, 33.2% had children under the age of 18 living with them, 55.3% were married couples living together, 10.2% had a female householder with no husband present, 28.6% were non-families, and 22.1% of all households were made up of individuals. The average household size was 2.61 and the average family size was 3.02. The median age was 40.9 years.[14]

The median income for a household in the county was $48,433 and the median income for a family was $56,106. Males had a median income of $45,319 versus $31,536 for females. The per capita income for the county was $21,041. About 8.7% of families and 12.8% of the population were below the poverty line, including 14.9% of those under age 18 and 6.6% of those age 65 or over.[17]

• Fernley
• Yerington (county seat)

• Dayton
• Silver City
• Silver Springs
• Smith Valley
• Stagecoach

There are three public airports in Lyon County:

• Yerington Municipal Airport, with a 5,800-foot-long runway.
• Silver Springs Airport, with a 7,200-foot-long runway capable of accepting 737s (its runway lights are visible when driving down on Fir Street from Ramsey Weeks cut-off to 95A).
• Tiger Field on US 95A about three miles from Fernley, with a gravel runway of 2,750 feet and a paved runway of 5,600 feet.

The Central Pacific (the first transcontinental railroad) ran through the county, although a portion of the original route has been shifted for a new route south of Wadsworth in favor of Fernley. The Central Pacific later became the Southern Pacific Railroad which was merged into Union Pacific in 1996.

The Virginia and Truckee Railroad runs through Mound House in western Lyon County, on its way from Carson City to Virginia City.

The narrow-gauge Carson and Colorado Railroad had its terminus in Mound House, where it intersected with the V&T. It traveled east through Dayton, then turned south to the Mason Valley, and east again on its way to Walker Lake. Later a branch line connected the C&C to the Southern Pacific at Hazen. While the line west of Silver Springs was removed, the line from Hazen to Walker Lake (now standard gauge) is still in place, and used several times each week by the Union Pacific to service the NV Energy Fort Churchill Generating Station, near Yerington.

The Eagle Salt Works Railroad ran for 13.5 miles, primarily on the original Central Pacific grade from Luva (two miles east of Fernley) to Eagle Salt Works Railroad.

The Nevada Copper Belt Railroad ran on the west side of the Mason Valley.

Amtrak's California Zephyr passenger train passes through, but does not stop in Lyon County. The nearest Amtrak passenger stations are located in Reno and Winnemucca. The California Zephyr runs from the San Francisco Bay Area to Chicago via Salt Lake City, Denver and Omaha.