Solano County
California · County seat: Fairfield · Active county or equivalent
FIPS code 06095 is Solano County, California. With a population of 450,995 (2022 ACS estimate), it ranks #19 in California and #156 nationally. Solano County is part of the Vallejo, CA. The state FIPS code for California is 06. This code is used in Census Bureau, BLS, EPA, HUD, and USDA federal datasets to identify this county.
County FIPS
06095
Population
450,995
2022 ACS · #156 nationally
Density
548.8/mi²
people per sq mile
Land Area
822
sq miles
Urban/Rural
Metro — 250K–1M population
RUCC 2
How This FIPS Code Works
The 5-digit FIPS code 06095 is formed by combining the 2-digit state identifier 06 (California) with the 3-digit county identifier 095. Together they uniquely identify Solano County in every US federal dataset. No two counties share the same 5-digit FIPS code.
Census ACS Data for FIPS 06095
From the 2022 ACS 5-year estimates — the same values you'd retrieve by querying the Census API with county FIPS 06095.
Median Household Income
$97,037
ACS B19013_001E
Poverty Rate
9.0%
ACS B17001 (below poverty level)
Median Age
38.8
ACS B01002_001E
Metropolitan Area
Adjacent Counties (6)
Counties that share a border with Solano County. Useful for regional analysis — these are the geographies you'd typically include when studying labor markets, commuting zones, or environmental spillovers around FIPS 06095.
Federal Datasets Using Code 06095
FIPS code 06095 appears as the county identifier in the following federal datasets. Analysts joining data across these sources use this code as the common geographic key.
Using FIPS Code 06095 in Code
Common patterns for querying federal datasets by this county's FIPS code. The leading zeros are significant — always treat FIPS codes as strings, not integers.
import requests
url = "https://api.census.gov/data/2022/acs/acs5"
params = {
"get": "NAME,B19013_001E,B01003_001E",
"for": "county:095",
"in": "state:06",
"key": "YOUR_CENSUS_API_KEY",
}
r = requests.get(url, params=params)
data = r.json() # [[header...], [Solano County, California, income, pop, ...]-- 5-digit combined FIPS (state + county)
SELECT * FROM your_table WHERE county_fips = '06095';
-- Some datasets store state and county separately
SELECT * FROM your_table
WHERE state_fips = '06'
AND county_fips = '095';
-- ⚠ Never cast to integer — leading zeros are lost:
-- county_fips = 6095 is WRONG for this countylibrary(tidycensus)
get_acs(
geography = "county",
variables = c(income = "B19013_001E", pop = "B01003_001E"),
state = "06",
county = "095",
year = 2022
)ZIP Codes in Solano County
ZIP codes do not align perfectly with county boundaries — a single ZIP code can span multiple counties, and a county can contain parts of many ZIP codes. The ratios below (from the Census 2020 ZCTA relationship file) show the land area share of each ZCTA that falls within Solano County. Why FIPS ≠ ZIP →
| ZIP Code | % in county |
|---|---|
| 95625 | 100.0% |
| 94510 | 100.0% |
| 94512 | 100.0% |
| 94533 | 100.0% |
| 94534 | 100.0% |
| 94535 | 100.0% |
| 94590 | 100.0% |
| 94592 | 100.0% |
| 95688 | 100.0% |
| 95687 | 100.0% |
| 94585 | 100.0% |
| 94589 | 100.0% |
| 94591 | 97.0% |
| 94571 | 81.9% |
| 95620 | 75.8% |
| 95690 | 36.3% |
| 94503 | 33.6% |
| 95618 | 22.7% |
| 95694 | 19.9% |
| 95612 | 11.4% |
| 95616 | 3.2% |