• county
  • FIPS 27091
  • Largest town: Fairmont

Martin County, Minnesota

Martin County had 19,561 residents in the Census Vintage 2024 estimate, on 712.3 square miles of land. It ranks 49th of 87 in Minnesota by population and 39th by land area.

Population
19,561
#49 of 87 in Minnesota · #1,853 in US
Area
712.3 sq mi
#39 of 87 in Minnesota · #1,286 in US
Density
27 / sq mi
#44 of 87 in Minnesota · #2,002 in US
Median household income
$59,843
#85 of 87 in Minnesota · #1,850 in US

Census Vintage 2024 estimates · SAIPE 2023 income · 2024 Gazetteer land area

Martin County within Minnesota. Pin: Saint Paul.

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Tools and pages that start from Martin County

Martin County population, land area and income

Martin County had 19,561 residents in the Census Vintage 2024 estimate, on 712.3 square miles of land. It ranks 49th of 87 in Minnesota by population and 39th by land area. That works out to 27.5 people per square mile, below the US average of 96.3, and below the national county median.

The median county-equivalent in Minnesota has 22,050 residents; Martin County is somewhat smaller.

Its SAIPE 2023 median household income of $59,843 is below the national county median among 3,143 counties with an estimate.

National rank among 3,144

Population

19,561

3144th1st

1853rd of 3,144 (US)

Land area

712 sq mi

3144th1st

1286th of 3,144 (US)

Density

27.5 / sq mi

3144th1st

2002nd of 3,144 (US)

Median household income

$59,843

3143rd1st

1850th of 3,143 (US)

Rank within Minnesota (87)

Population

19,561

87th1st

49th of 87 (MN)

Land area

712 sq mi

87th1st

39th of 87 (MN)

Density

27.5 / sq mi

87th1st

44th of 87 (MN)

Median household income

$59,843

87th1st

85th of 87 (MN)

How Martin County's population changed since 2020

Martin County lost 432 residents between the July 2020 and July 2024 estimates, a drop of 2.2%. That ranks 78th of 87 in Minnesota for growth. The median Minnesota county changed by +0.6%, and the state as a whole by +1.4%.

Since the April 2020 estimates base, Martin County recorded 939 births and 1,172 deaths, a natural change of -233. Net international migration added +52 and net domestic migration, people moving to or from other US counties, came to -295. The largest single component was domestic migration, which removed 295 people.

20.0k202019.9k202119.7k202219.7k202319.6k2024
Census Vintage 2024 county estimates for July 1 of each year. The axis starts above zero so year-to-year changes are visible.

Components of change, April 2020 to July 2024

Births
939
Deaths
1,172
Net international migration
+52
Net domestic migration
-295
Change, July 2023 to July 2024
-167

Where Martin County is

The Census internal point of Martin County is at 43.677200, -94.547100. It sits in UTM zone 15N. The map shades Minnesota's 87 county-equivalents by population change from 2020 to 2024, darker for faster growth, with Martin County outlined. Dots are towns of 1,000+ people with residents in it.

Cook County: -0.5%Kanabec County: +3.4%Carlton County: +1.5%Becker County: +0.7%Dodge County: +1.7%Douglas County: +2.1%Murray County: -1.5%Pipestone County: -3.3%Rock County: -1.7%Steele County: +0.1%Waseca County: -1.4%Pennington County: -2.1%Red Lake County: -1.5%Stevens County: +1.6%Hubbard County: +3.1%Mahnomen County: -1.8%Fillmore County: +1.2%Otter Tail County: +1.4%Rice County: +2.9%Meeker County: +0.2%Nobles County: -1.1%Swift County: -1.5%Watonwan County: -0.3%Wadena County: +2.2%Polk County: -2.1%Lyon County: +0.6%St. Louis County: +0.4%Todd County: +2.6%Carver County: +5.0%Kandiyohi County: +2.2%Olmsted County: +2.1%Roseau County: -0.3%Dakota County: +2.9%Yellow Medicine County: -1.2%Crow Wing County: +3.6%Sibley County: +2.7%Morrison County: +1.5%Lac qui Parle County: -1.0%Lincoln County: -1.3%Martin County: -2.2%Clay County: +2.3%Houston County: -2.5%Wilkin County: -3.3%Nicollet County: -0.0%Norman County: -2.4%Benton County: +1.3%Anoka County: +3.4%Blue Earth County: +2.2%Traverse County: -6.7%Aitkin County: +4.0%Marshall County: -3.0%Grant County: +0.3%Wabasha County: +0.8%Lake County: -2.0%Cottonwood County: -1.6%Brown County: -0.8%Cass County: +4.2%Lake of the Woods County: +0.7%Scott County: +3.9%Isanti County: +5.5%Stearns County: +3.5%Clearwater County: +0.7%Hennepin County: -0.7%Kittson County: -4.7%Wright County: +9.0%Goodhue County: +0.8%Jackson County: -1.3%Washington County: +5.8%Chippewa County: -2.5%Freeborn County: -1.9%Koochiching County: -3.6%Big Stone County: -1.8%Redwood County: -1.1%Chisago County: +4.2%Faribault County: -0.1%Renville County: -1.6%Itasca County: +0.9%Mower County: +2.1%Sherburne County: +5.6%Mille Lacs County: +4.2%Winona County: +0.6%Ramsey County: -1.8%Pine County: +4.9%McLeod County: +0.1%Pope County: +1.5%Le Sueur County: +2.8%Beltrami County: +1.1%
Change 2020 to 2024
  1. < -1.7%
  2. < -0.3%
  3. < +1.2%
  4. < +2.8%
  5. ≥ +2.8%
no data

Orange pin: Martin County internal point. Dark pin: Saint Paul.

Internal point

Decimal
43.677200, -94.547100
DMS
43°40'37.92"N 94°32'49.56"W
UTM
15N 375291.4E 4837184.1N
Geohash
9zub2x0yh
Plus code
86M7MFG3+V5

Towns in Martin County

3 incorporated places of 1,000+ people have residents in Martin County, 12,295 people together, or 63% of the county. Each figure counts only the part of the town inside Martin County; towns marked "part" extend into another county. The largest is Fairmont with 10,176.

  1. 01Fairmont10,176
  2. 02Truman1,069
  3. 03Sherburn1,050
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering Martin County

The Census 2024 county adjacency file lists 6 neighbors for Martin County, including 2 across a state line. The most populous is Blue Earth County, MN, with 70,700 residents. Distances run between Census internal points in a straight line.

Distance to Saint Paul and the nearest big city

Saint Paul is 113.6 miles NE of Martin County's internal point in a straight line. The nearest place of 100,000 or more is Rochester, MN (population 123,624), 105.7 miles away. The nearest place of 10,000 or more is Fairmont, MN (population 10,176), 4.7 miles away.

Martin County FIPS code

The FIPS code of Martin County is 27091: state code 27 for Minnesota plus county code 091. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $59,843.

Questions people ask

What is the population of Martin County, Minnesota?

The Census Vintage 2024 estimate for July 1, 2024 is 19,561. That is down 432 people (2.2%) from the July 2020 estimate of 19,993.

What is the FIPS code of Martin County?

27091. The first two digits (27) are Minnesota; the last three (091) identify the county.

What is the largest town in Martin County?

Fairmont, with 10,176 residents inside Martin County in 2024.

Which counties border Martin County?

6 county-equivalents border it in the Census 2024 adjacency file: Blue Earth County, MN; Kossuth County, IA; Faribault County, MN; Watonwan County, MN; Jackson County, MN; Emmet County, IA.

Sources and data as of

Data as of: Census Vintage 2024 population estimates, 2024 Gazetteer land area and internal points, SAIPE 2023 median household income.

  1. 01Census Vintage 2024 county population estimates
  2. 02Census 2024 Gazetteer, counties
  3. 03Census SAIPE 2023 state and county estimates
  4. 04Census Vintage 2024 subcounty population estimates
  5. 05Census 2024 county adjacency file
  6. 06Census 2024 cartographic boundary file, counties (1:5,000,000)

How every number is computed: methodology. Spotted a wrong figure? Report an error.