Otter Tail County
Minnesota · County seat: Fergus Falls · Active county or equivalent
FIPS code 27111 is Otter Tail County, Minnesota. With a population of 60,072 (2022 ACS estimate), it ranks #17 in Minnesota and #878 nationally. Otter Tail County is part of the Fergus Falls, MN. The state FIPS code for Minnesota is 27. This code is used in Census Bureau, BLS, EPA, HUD, and USDA federal datasets to identify this county.
County FIPS
27111
Population
60,072
2022 ACS · #878 nationally
Density
30.5/mi²
people per sq mile
Land Area
1,972
sq miles
Urban/Rural
Nonmetro — urban 2.5K–19.9K, adjacent to metro
RUCC 6
How This FIPS Code Works
The 5-digit FIPS code 27111 is formed by combining the 2-digit state identifier 27 (Minnesota) with the 3-digit county identifier 111. Together they uniquely identify Otter Tail County in every US federal dataset. No two counties share the same 5-digit FIPS code.
Census ACS Data for FIPS 27111
From the 2022 ACS 5-year estimates — the same values you'd retrieve by querying the Census API with county FIPS 27111.
Median Household Income
$67,990
ACS B19013_001E
Poverty Rate
8.7%
ACS B17001 (below poverty level)
Median Age
46.1
ACS B01002_001E
Metropolitan Area
Adjacent Counties (7)
Counties that share a border with Otter Tail County. Useful for regional analysis — these are the geographies you'd typically include when studying labor markets, commuting zones, or environmental spillovers around FIPS 27111.
Federal Datasets Using Code 27111
FIPS code 27111 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 27111 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:111",
"in": "state:27",
"key": "YOUR_CENSUS_API_KEY",
}
r = requests.get(url, params=params)
data = r.json() # [[header...], [Otter Tail County, Minnesota, income, pop, ...]-- 5-digit combined FIPS (state + county)
SELECT * FROM your_table WHERE county_fips = '27111';
-- Some datasets store state and county separately
SELECT * FROM your_table
WHERE state_fips = '27'
AND county_fips = '111';
-- ⚠ Never cast to integer — leading zeros are lost:
-- county_fips = 27111 is WRONG for this countylibrary(tidycensus)
get_acs(
geography = "county",
variables = c(income = "B19013_001E", pop = "B01003_001E"),
state = "27",
county = "111",
year = 2022
)ZIP Codes in Otter Tail 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 Otter Tail County. Why FIPS ≠ ZIP →
| ZIP Code | % in county |
|---|---|
| 56537 | 100.0% |
| 56588 | 100.0% |
| 56524 | 100.0% |
| 56527 | 100.0% |
| 56528 | 100.0% |
| 56533 | 100.0% |
| 56534 | 100.0% |
| 56587 | 100.0% |
| 56586 | 100.0% |
| 56576 | 100.0% |
| 56573 | 100.0% |
| 56571 | 100.0% |
| 56567 | 100.0% |
| 56515 | 100.0% |
| 56518 | 100.0% |
| 56551 | 100.0% |
| 56324 | 98.0% |
| 56572 | 91.2% |
| 56361 | 83.3% |
| 56453 | 59.0% |
| 56482 | 44.5% |
| 56309 | 37.9% |
| 56579 | 26.6% |
| 56477 | 21.1% |
| 56544 | 20.9% |
| 56522 | 12.4% |
| 56446 | 12.3% |
| 56437 | 11.5% |
| 56326 | 9.4% |
| 56501 | 6.2% |
Showing top 30 of 34 ZIP codes by residential address share.