Clay County
Florida · County seat: Green Cove Springs · Active county or equivalent
FIPS code 12019 is Clay County, Florida. With a population of 219,650 (2022 ACS estimate), it ranks #25 in Florida and #312 nationally. Clay County is part of the Jacksonville, FL. The state FIPS code for Florida is 12. This code is used in Census Bureau, BLS, EPA, HUD, and USDA federal datasets to identify this county.
County FIPS
12019
Population
219,650
2022 ACS · #312 nationally
Density
363.4/mi²
people per sq mile
Land Area
604
sq miles
Urban/Rural
Metro — 1M+ population
RUCC 1
How This FIPS Code Works
The 5-digit FIPS code 12019 is formed by combining the 2-digit state identifier 12 (Florida) with the 3-digit county identifier 019. Together they uniquely identify Clay County in every US federal dataset. No two counties share the same 5-digit FIPS code.
Census ACS Data for FIPS 12019
From the 2022 ACS 5-year estimates — the same values you'd retrieve by querying the Census API with county FIPS 12019.
Median Household Income
$82,242
ACS B19013_001E
Poverty Rate
9.4%
ACS B17001 (below poverty level)
Median Age
39.9
ACS B01002_001E
Metropolitan Area
Adjacent Counties (5)
Counties that share a border with Clay County. Useful for regional analysis — these are the geographies you'd typically include when studying labor markets, commuting zones, or environmental spillovers around FIPS 12019.
Federal Datasets Using Code 12019
FIPS code 12019 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 12019 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:019",
"in": "state:12",
"key": "YOUR_CENSUS_API_KEY",
}
r = requests.get(url, params=params)
data = r.json() # [[header...], [Clay County, Florida, income, pop, ...]-- 5-digit combined FIPS (state + county)
SELECT * FROM your_table WHERE county_fips = '12019';
-- Some datasets store state and county separately
SELECT * FROM your_table
WHERE state_fips = '12'
AND county_fips = '019';
-- ⚠ Never cast to integer — leading zeros are lost:
-- county_fips = 12019 is WRONG for this countylibrary(tidycensus)
get_acs(
geography = "county",
variables = c(income = "B19013_001E", pop = "B01003_001E"),
state = "12",
county = "019",
year = 2022
)ZIP Codes in Clay 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 Clay County. Why FIPS ≠ ZIP →
| ZIP Code | % in county |
|---|---|
| 32003 | 100.0% |
| 32065 | 100.0% |
| 32068 | 100.0% |
| 32073 | 100.0% |
| 32079 | 100.0% |
| 32656 | 95.2% |
| 32043 | 92.7% |
| 32234 | 28.9% |
| 32666 | 15.6% |
| 32091 | 15.5% |
| 32140 | 10.2% |
| 32058 | 2.8% |