FIPS code 51199 is York County, Virginia. With a population of 70,238 (2022 ACS estimate), it ranks #30 in Virginia and #772 nationally. York County is part of the Virginia Beach-Chesapeake-Norfolk, VA-NC. The state FIPS code for Virginia is 51. This code is used in Census Bureau, BLS, EPA, HUD, and USDA federal datasets to identify this county.
County FIPS
51199
Population
70,238
2022 ACS · #772 nationally
Density
670.3/mi²
people per sq mile
Land Area
105
sq miles
Urban/Rural
Metro — 1M+ population
RUCC 1
How This FIPS Code Works
The 5-digit FIPS code 51199 is formed by combining the 2-digit state identifier 51 (Virginia) with the 3-digit county identifier 199. Together they uniquely identify York County in every US federal dataset. No two counties share the same 5-digit FIPS code.
Census ACS Data for FIPS 51199
From the 2022 ACS 5-year estimates — the same values you'd retrieve by querying the Census API with county FIPS 51199.
Median Household Income
$105,154
ACS B19013_001E
Poverty Rate
4.7%
ACS B17001 (below poverty level)
Median Age
39.7
ACS B01002_001E
Metropolitan Area
Adjacent Counties (8)
Counties that share a border with York County. Useful for regional analysis — these are the geographies you'd typically include when studying labor markets, commuting zones, or environmental spillovers around FIPS 51199.
Federal Datasets Using Code 51199
FIPS code 51199 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 51199 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:199",
"in": "state:51",
"key": "YOUR_CENSUS_API_KEY",
}
r = requests.get(url, params=params)
data = r.json() # [[header...], [York County, Virginia, income, pop, ...]-- 5-digit combined FIPS (state + county)
SELECT * FROM your_table WHERE county_fips = '51199';
-- Some datasets store state and county separately
SELECT * FROM your_table
WHERE state_fips = '51'
AND county_fips = '199';
-- ⚠ Never cast to integer — leading zeros are lost:
-- county_fips = 51199 is WRONG for this countylibrary(tidycensus)
get_acs(
geography = "county",
variables = c(income = "B19013_001E", pop = "B01003_001E"),
state = "51",
county = "199",
year = 2022
)ZIP Codes in York 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 York County. Why FIPS ≠ ZIP →
| ZIP Code | % in county |
|---|---|
| 23696 | 100.0% |
| 23690 | 100.0% |
| 23691 | 100.0% |
| 23692 | 100.0% |
| 23693 | 100.0% |
| 23185 | 31.5% |
| 23188 | 25.8% |
| 23665 | 10.4% |
| 23603 | 2.8% |