Polk County
Wisconsin · County seat: Balsam Lake · Active county or equivalent
FIPS code 55095 is Polk County, Wisconsin. With a population of 45,128 (2022 ACS estimate), it ranks #33 in Wisconsin and #1080 nationally. The state FIPS code for Wisconsin is 55. This code is used in Census Bureau, BLS, EPA, HUD, and USDA federal datasets to identify this county.
County FIPS
55095
Population
45,128
2022 ACS · #1080 nationally
Density
49.4/mi²
people per sq mile
Land Area
914
sq miles
Urban/Rural
Nonmetro — rural, adjacent to metro
RUCC 8
How This FIPS Code Works
The 5-digit FIPS code 55095 is formed by combining the 2-digit state identifier 55 (Wisconsin) with the 3-digit county identifier 095. Together they uniquely identify Polk County in every US federal dataset. No two counties share the same 5-digit FIPS code.
Census ACS Data for FIPS 55095
From the 2022 ACS 5-year estimates — the same values you'd retrieve by querying the Census API with county FIPS 55095.
Median Household Income
$74,142
ACS B19013_001E
Poverty Rate
8.3%
ACS B17001 (below poverty level)
Median Age
46.5
ACS B01002_001E
Adjacent Counties (6)
Counties that share a border with Polk County. Useful for regional analysis — these are the geographies you'd typically include when studying labor markets, commuting zones, or environmental spillovers around FIPS 55095.
Federal Datasets Using Code 55095
FIPS code 55095 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 55095 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:095",
"in": "state:55",
"key": "YOUR_CENSUS_API_KEY",
}
r = requests.get(url, params=params)
data = r.json() # [[header...], [Polk County, Wisconsin, income, pop, ...]-- 5-digit combined FIPS (state + county)
SELECT * FROM your_table WHERE county_fips = '55095';
-- Some datasets store state and county separately
SELECT * FROM your_table
WHERE state_fips = '55'
AND county_fips = '095';
-- ⚠ Never cast to integer — leading zeros are lost:
-- county_fips = 55095 is WRONG for this countylibrary(tidycensus)
get_acs(
geography = "county",
variables = c(income = "B19013_001E", pop = "B01003_001E"),
state = "55",
county = "095",
year = 2022
)ZIP Codes in Polk 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 Polk County. Why FIPS ≠ ZIP →
| ZIP Code | % in county |
|---|---|
| 54001 | 100.0% |
| 54006 | 100.0% |
| 54009 | 100.0% |
| 54024 | 100.0% |
| 54810 | 100.0% |
| 54824 | 100.0% |
| 54858 | 100.0% |
| 54020 | 99.0% |
| 54853 | 96.1% |
| 54837 | 82.4% |
| 54026 | 75.7% |
| 54005 | 64.9% |
| 54826 | 55.2% |
| 54889 | 55.2% |
| 54004 | 32.8% |
| 54829 | 25.1% |
| 54007 | 21.6% |
| 54840 | 11.9% |
| 54872 | 5.6% |
| 54017 | 3.2% |