Solano County, California Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 19th-largest in California
The population of Solano County, California is 450,824 as of the 2023 American Community Survey, making it the 19th-largest county in California. The median household income is $99,994, the median home value is $589,600, and the median age is 39.1.
The population of Solano County has grown 9.9% since 2010 (413,963 → 455,101), a +0.68% annualized rate.
450,824
Population
+0.68%
Annual growth
549
People / sq mi
$99,994
Median Income
$589,600
Median Home Value
Solano County covers 822 sq mi of land at 548.6 people per square mile.
About Solano County, CA
In Solano County, home values do the distinguishing — a median of $589,600. Solano County is a county in California with a population of 450,824. It ranks #19 among counties in California by population.
Earnings sit at the high end: a median household income of $99,994, above the US median of $78,538. About 7.1% of residents live below the federal poverty level, below the national 12.4%. Real estate commands a premium here — a median home value of $589,600, with typical rent around $2,088.
About 28.4% of adults 25 and older have a bachelor’s degree, below the 35.0% national figure. Remote work is on the higher side at 10.9%, below the national 14.0%, and the average commute runs about 32 minutes each way.
High housing values reframe the income picture in Solano County — even solid earnings stretch less against home prices and rents at this level.
Solano County Population History (2010-2024)
The county of Solano County had a population of 413,963 in 2010 and 455,101 in 2024, a 9.9% growth over 14 years. The peak was 455,101 in 2024. Average annual growth rate: 0.68%.
455,101
Population (2024)
413,963
Population (2010)
455,101
Peak (2024)
0.68%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 413,963 |
| 2011 | 416,325 |
| 2012 | 419,645 |
| 2013 | 423,634 |
| 2014 | 428,971 |
| 2015 | 433,378 |
| 2016 | 438,834 |
| 2017 | 443,554 |
| 2018 | 445,931 |
| 2019 | 447,434 |
| 2020 | 452,887 |
| 2021 | 450,819 |
| 2022 | 449,724 |
| 2023 | 451,060 |
| 2024 | 455,101 |
Race & Ethnicity
| White | 42.7% |
| Black or African American | 12.9% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 2.8% |
| Two or More Races | 0.1% |
Age & Sex
39.1
Median Age
50.1%
Female
49.9%
Male
16.9%
Age 65+
Age Distribution
Children (under 15): 18.4% · Seniors (65+): 16.9%
Income & Poverty
| Median household income | $99,994+$3,660 vs state |
| Mean household income | $124,288 |
| Per-capita income | $44,139 |
| Poverty rate | 7.1%-1.3% vs state |
| Unemployment rate | 3.6% |
| Employment-to-population | 57.6% |
Top Industries by Employment
The largest employment sector in Solano County is professional & business services, accounting for 22.7% of workers.
How residents commute
1.9%
Drive alone
1.3%
Carpool
74.2%
Public transit
10.9%
Work from home
31.8 min
Avg commute
Housing
$589,600$-105,800 vs state
Median home value
$2,088
Median rent
63.2%
Homeownership rate
163,455
Total housing units
95.3%
Occupied
4.7%
Vacant
36.8%
Renter-occupied
Social & access
95.1%
With health insurance
96.9%
With broadband internet
17.4%
Foreign-born
8.3%
Veterans (18+)
12.8%
With a disability
69.3%
Speak language other than English at home
Education
88.9%
High School+
28.4%
Bachelor's+
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County rankings
Common questions about Solano County, CA
Frequently Asked Questions
Solano County, California has a population of 450,824 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 19th-largest county in California. Population density is 549 people per square mile.
The population of Solano County has grown 9.9% since 2010 (413,963 → 455,101), a +0.68% annualized rate.
The median household income in Solano County, California is $99,994, with mean (average) household income of $124,288 and per-capita income of $44,139. 7.1% of residents live below the federal poverty level.
In Solano County, the largest racial and ethnic groups are White (42.7%), Black or African American (12.9%), Hispanic or Latino (2.8%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Solano County, California is 39.1 years. Residents are 50.1% female and 49.9% male.
The median home value in Solano County is $589,600 and median monthly rent is $2,088. 63.2% of occupied housing units are owner-occupied. The county has 163,455 total housing units, 4.7% of which are vacant.
The largest employment sector in Solano County, California is professional, scientific, and management services, employing 22.7% of workers. The unemployment rate is 3.6%.
Los Angeles is among the largest cities associated with Solano County, California, with a population of 3,857,897.
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.