Bayfield County
Wisconsin · County seat: Washburn · Active county or equivalent
FIPS code 55007 is Bayfield County, Wisconsin. With a population of 16,214 (2022 ACS estimate), it ranks #61 in Wisconsin and #2082 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
55007
Population
16,214
2022 ACS · #2082 nationally
Density
11.0/mi²
people per sq mile
Land Area
1,478
sq miles
Urban/Rural
Nonmetro — rural, adjacent to metro
RUCC 8
How This FIPS Code Works
The 5-digit FIPS code 55007 is formed by combining the 2-digit state identifier 55 (Wisconsin) with the 3-digit county identifier 007. Together they uniquely identify Bayfield County in every US federal dataset. No two counties share the same 5-digit FIPS code.
Census ACS Data for FIPS 55007
From the 2022 ACS 5-year estimates — the same values you'd retrieve by querying the Census API with county FIPS 55007.
Median Household Income
$67,266
ACS B19013_001E
Poverty Rate
10.4%
ACS B17001 (below poverty level)
Median Age
53.6
ACS B01002_001E
Adjacent Counties (5)
Counties that share a border with Bayfield County. Useful for regional analysis — these are the geographies you'd typically include when studying labor markets, commuting zones, or environmental spillovers around FIPS 55007.
Federal Datasets Using Code 55007
FIPS code 55007 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 55007 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:007",
"in": "state:55",
"key": "YOUR_CENSUS_API_KEY",
}
r = requests.get(url, params=params)
data = r.json() # [[header...], [Bayfield County, Wisconsin, income, pop, ...]-- 5-digit combined FIPS (state + county)
SELECT * FROM your_table WHERE county_fips = '55007';
-- Some datasets store state and county separately
SELECT * FROM your_table
WHERE state_fips = '55'
AND county_fips = '007';
-- ⚠ Never cast to integer — leading zeros are lost:
-- county_fips = 55007 is WRONG for this countylibrary(tidycensus)
get_acs(
geography = "county",
variables = c(income = "B19013_001E", pop = "B01003_001E"),
state = "55",
county = "007",
year = 2022
)ZIP Codes in Bayfield 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 Bayfield County. Why FIPS ≠ ZIP →
| ZIP Code | % in county |
|---|---|
| 54865 | 100.0% |
| 54832 | 100.0% |
| 54891 | 100.0% |
| 54839 | 100.0% |
| 54844 | 100.0% |
| 54847 | 100.0% |
| 54814 | 100.0% |
| 54827 | 100.0% |
| 54856 | 98.5% |
| 54821 | 97.9% |
| 54820 | 47.8% |
| 54873 | 36.1% |
| 54806 | 33.3% |
| 54517 | 12.2% |
| 54838 | 1.7% |