FIPS code 21149 is McLean County, Kentucky. With a population of 9,173 (2022 ACS estimate), it ranks #101 in Kentucky and #2544 nationally. McLean County is part of the Owensboro, KY. The state FIPS code for Kentucky is 21. This code is used in Census Bureau, BLS, EPA, HUD, and USDA federal datasets to identify this county.
County FIPS
21149
Population
9,173
2022 ACS · #2544 nationally
Density
36.3/mi²
people per sq mile
Land Area
252
sq miles
Urban/Rural
Metro — under 250K population
RUCC 3
How This FIPS Code Works
The 5-digit FIPS code 21149 is formed by combining the 2-digit state identifier 21 (Kentucky) with the 3-digit county identifier 149. Together they uniquely identify McLean County in every US federal dataset. No two counties share the same 5-digit FIPS code.
Census ACS Data for FIPS 21149
From the 2022 ACS 5-year estimates — the same values you'd retrieve by querying the Census API with county FIPS 21149.
Median Household Income
$64,020
ACS B19013_001E
Poverty Rate
7.9%
ACS B17001 (below poverty level)
Median Age
43.2
ACS B01002_001E
Metropolitan Area
Adjacent Counties (6)
Counties that share a border with McLean County. Useful for regional analysis — these are the geographies you'd typically include when studying labor markets, commuting zones, or environmental spillovers around FIPS 21149.
Federal Datasets Using Code 21149
FIPS code 21149 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 21149 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:149",
"in": "state:21",
"key": "YOUR_CENSUS_API_KEY",
}
r = requests.get(url, params=params)
data = r.json() # [[header...], [McLean County, Kentucky, income, pop, ...]-- 5-digit combined FIPS (state + county)
SELECT * FROM your_table WHERE county_fips = '21149';
-- Some datasets store state and county separately
SELECT * FROM your_table
WHERE state_fips = '21'
AND county_fips = '149';
-- ⚠ Never cast to integer — leading zeros are lost:
-- county_fips = 21149 is WRONG for this countylibrary(tidycensus)
get_acs(
geography = "county",
variables = c(income = "B19013_001E", pop = "B01003_001E"),
state = "21",
county = "149",
year = 2022
)ZIP Codes in McLean 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 McLean County. Why FIPS ≠ ZIP →
| ZIP Code | % in county |
|---|---|
| 42322 | 100.0% |
| 42350 | 100.0% |
| 42371 | 100.0% |
| 42327 | 99.0% |
| 42372 | 71.9% |
| 42352 | 59.4% |
| 42376 | 8.5% |
| 42301 | 0.5% |