FIPS code 20051 is Ellis County, Kansas. With a population of 28,921 (2022 ACS estimate), it ranks #21 in Kansas and #1490 nationally. Ellis County is part of the Hays, KS. The state FIPS code for Kansas is 20. This code is used in Census Bureau, BLS, EPA, HUD, and USDA federal datasets to identify this county.
County FIPS
20051
Population
28,921
2022 ACS · #1490 nationally
Density
32.1/mi²
people per sq mile
Land Area
900
sq miles
Urban/Rural
Nonmetro — urban 20K+, not adjacent to metro
RUCC 5
How This FIPS Code Works
The 5-digit FIPS code 20051 is formed by combining the 2-digit state identifier 20 (Kansas) with the 3-digit county identifier 051. Together they uniquely identify Ellis County in every US federal dataset. No two counties share the same 5-digit FIPS code.
Census ACS Data for FIPS 20051
From the 2022 ACS 5-year estimates — the same values you'd retrieve by querying the Census API with county FIPS 20051.
Median Household Income
$59,665
ACS B19013_001E
Poverty Rate
15.3%
ACS B17001 (below poverty level)
Median Age
32.9
ACS B01002_001E
Metropolitan Area
Adjacent Counties (6)
Counties that share a border with Ellis County. Useful for regional analysis — these are the geographies you'd typically include when studying labor markets, commuting zones, or environmental spillovers around FIPS 20051.
Federal Datasets Using Code 20051
FIPS code 20051 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 20051 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:051",
"in": "state:20",
"key": "YOUR_CENSUS_API_KEY",
}
r = requests.get(url, params=params)
data = r.json() # [[header...], [Ellis County, Kansas, income, pop, ...]-- 5-digit combined FIPS (state + county)
SELECT * FROM your_table WHERE county_fips = '20051';
-- Some datasets store state and county separately
SELECT * FROM your_table
WHERE state_fips = '20'
AND county_fips = '051';
-- ⚠ Never cast to integer — leading zeros are lost:
-- county_fips = 20051 is WRONG for this countylibrary(tidycensus)
get_acs(
geography = "county",
variables = c(income = "B19013_001E", pop = "B01003_001E"),
state = "20",
county = "051",
year = 2022
)ZIP Codes in Ellis 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 Ellis County. Why FIPS ≠ ZIP →
| ZIP Code | % in county |
|---|---|
| 67627 | 100.0% |
| 67674 | 100.0% |
| 67601 | 100.0% |
| 67660 | 100.0% |
| 67667 | 100.0% |
| 67671 | 100.0% |
| 67640 | 55.2% |
| 67637 | 50.2% |
| 67663 | 23.4% |
| 67651 | 13.2% |
| 67556 | 12.7% |
| 67565 | 1.0% |