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Martin County, Minnesota

Martin County profile, demographic data, and geographic information.

Martin County is a county located in Minnesota, United States of America. As of official census estimates, it has a reported population of 19,440. The land area covers 712.33 sq mi. [1]

Local Government Administration U.S. Census Bureau GMAF

County Of Martin County
Official Title: County Coordinator
Address: 201 LAKE AVENUE, FAIRMONT MN 56031

Demographics & Population

Demographic Metric Estimate / Count Margin of Error Survey Period / Source
Total Population (2025 PEP Estimate) 19,440 — 2025 / Census
Median Age 43.9 yrs ±0.3 2020-2024 / Census ACS 5-Year 2024
Total Households 8,839 ±250 2020-2024 / Census ACS 5-Year 2024
Source: U.S. Census Bureau (PEP, ACS 5-Year).

Housing & Real Estate Profile

Housing Metric Estimate / Value Margin of Error
Total Housing Units 9,729 ±69
Occupied Housing Units 8,839 ±250
Vacant Housing Units 890 ±238
Median Home Value $163,500 ±$7,281
Median Gross Rent $761 ±$61
Source: U.S. Census Bureau ACS 5-Year (2020-2024).

Economy & Workforce

Economic Metric Estimate / Value Margin of Error
Median Household Income $59,507 ±$3,542
Per Capita Income $37,332 ±$2,107
Poverty Rate 13.1% ±2.6%
Population Below Poverty Level 2,564 ±517
Unemployment Rate 4.2% ±1.3%
Civilian Labor Force, Employed 9,478 ±269
Broadband Internet Rate 86.3% ±2%
Source: U.S. Census Bureau ACS 5-Year (2020-2024).

Climate & Weather Observations

NOAA Monthly Climate Normals

Observation Station: Climate data reflects NOAA 1991–2020 standard normals recorded at FAIRMONT, MN US, located 4.7 miles from Martin County. Local microclimates, topography, and elevation may cause municipal conditions to differ.
Month High (°F) Low (°F) Mean (°F) Precip (in) Snow (in)
January 23.9° 6.6° 15.2° 0.85" —
February 28.3° 10.2° 19.2° 1.16" —
March 40.9° 22.4° 31.6° 1.93" —
April 56.3° 34.9° 45.6° 3.53" —
May 68.9° 49.0° 58.9° 4.58" —
June 79.7° 60.1° 69.9° 5.02" —
July 82.9° 63.9° 73.4° 3.88" —
August 80.7° 61.3° 71.0° 3.79" —
September 74.5° 52.4° 63.4° 3.44" —
October 59.9° 39.4° 49.6° 2.32" —
November 43.2° 25.4° 34.3° 1.58" —
December 29.1° 13.3° 21.2° 1.38" —
Source: NOAA U.S. Climate Normals (1991–2020).

Local Weather Forecast

Weather forecast data is currently unavailable in the local cache.

Sources & Data Provenance

  1. Geographic Classification & Identifiers: U.S. Census Bureau Gazetteer (2026) and TIGER/Line Shapefiles. GEOID: 27091. • Official Source Dataset →
  2. Socioeconomic & Housing Metrics: U.S. Census Bureau American Community Survey (ACS) 5-year estimates and Population Estimates Program (PEP). Margin of Error (MOE) intervals are reported where published; suppressed values are never estimated or replaced with false zeros.
  3. Civic Directory Datasets: Centers for Medicare & Medicaid Services (CMS Hospital Directory), National Center for Education Statistics (NCES IPEDS Postsecondary Directory), and Institute of Museum and Library Services (IMLS Public Libraries Survey). Airport landing facilities are provided by airport-data.com.
  4. Weather & Climate Observations: National Oceanic and Atmospheric Administration (NOAA) U.S. Climate Normals 1991–2020 and National Weather Service (NWS) point forecasts.