Custer County
Nebraska · County seat: Broken Bow · Active county or equivalent
FIPS code 31041 is Custer County, Nebraska. With a population of 10,566 (2022 ACS estimate), it ranks #24 in Nebraska and #2438 nationally. The state FIPS code for Nebraska is 31. This code is used in Census Bureau, BLS, EPA, HUD, and USDA federal datasets to identify this county.
County FIPS
31041
Population
10,566
2022 ACS · #2438 nationally
Density
4.1/mi²
people per sq mile
Land Area
2,576
sq miles
Urban/Rural
Nonmetro — completely rural
RUCC 9
How This FIPS Code Works
The 5-digit FIPS code 31041 is formed by combining the 2-digit state identifier 31 (Nebraska) with the 3-digit county identifier 041. Together they uniquely identify Custer County in every US federal dataset. No two counties share the same 5-digit FIPS code.
Census ACS Data for FIPS 31041
From the 2022 ACS 5-year estimates — the same values you'd retrieve by querying the Census API with county FIPS 31041.
Median Household Income
$62,288
ACS B19013_001E
Poverty Rate
11.3%
ACS B17001 (below poverty level)
Median Age
42.1
ACS B01002_001E
Adjacent Counties (9)
Counties that share a border with Custer County. Useful for regional analysis — these are the geographies you'd typically include when studying labor markets, commuting zones, or environmental spillovers around FIPS 31041.
Federal Datasets Using Code 31041
FIPS code 31041 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 31041 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:041",
"in": "state:31",
"key": "YOUR_CENSUS_API_KEY",
}
r = requests.get(url, params=params)
data = r.json() # [[header...], [Custer County, Nebraska, income, pop, ...]-- 5-digit combined FIPS (state + county)
SELECT * FROM your_table WHERE county_fips = '31041';
-- Some datasets store state and county separately
SELECT * FROM your_table
WHERE state_fips = '31'
AND county_fips = '041';
-- ⚠ Never cast to integer — leading zeros are lost:
-- county_fips = 31041 is WRONG for this countylibrary(tidycensus)
get_acs(
geography = "county",
variables = c(income = "B19013_001E", pop = "B01003_001E"),
state = "31",
county = "041",
year = 2022
)ZIP Codes in Custer 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 Custer County. Why FIPS ≠ ZIP →
| ZIP Code | % in county |
|---|---|
| 68855 | 100.0% |
| 68814 | 100.0% |
| 68881 | 100.0% |
| 68822 | 100.0% |
| 68825 | 100.0% |
| 68856 | 100.0% |
| 68860 | 96.8% |
| 68874 | 95.3% |
| 68828 | 72.8% |
| 68813 | 63.9% |
| 69120 | 54.9% |
| 69138 | 33.3% |
| 68834 | 31.0% |
| 68815 | 26.0% |
| 68833 | 23.9% |
| 68878 | 21.6% |
| 68852 | 13.5% |
| 69130 | 7.0% |
| 68866 | 5.6% |
| 68858 | 4.3% |
| 68823 | 2.2% |