COUNTY · MN

St. Louis County, Minnesota

St. Louis County is a county in Minnesota with FIPS code 27137 and an estimated population of 200,514 (Census 2023), 6th largest of 87 in the state.

County facts

Name: St. Louis County
State: Minnesota
Type: county
FIPS code: 27137
State FIPS: 27
Population (2023): 200,514
Change since 2020: +0.2%
State rank: 6 of 87

Population is the Census Bureau’s Vintage 2023 estimate.

Major cities in St. Louis County

Duluth

Other counties in Minnesota

Hennepin County Ramsey County Dakota County Anoka County Washington County Olmsted County Stearns County Scott County All 87

Questions

What is the FIPS code for St. Louis County?

St. Louis County, Minnesota has the five-digit FIPS code 27137: 27 for the state and 137 for the county.

What state is St. Louis County in?

St. Louis County is in Minnesota.

How do I know if an address is in this county?

Use the address lookup. ZIP codes and city names can cross county lines, so an address is the reliable check.

Sources: U.S. Census Bureau geographic reference files; Census Bureau Population Estimates, Vintage 2023. Last reviewed 2026-10-27.