• county
  • FIPS 26005
  • Largest town: Holland

Allegan County, Michigan

Allegan County had 122,429 residents in the Census Vintage 2024 estimate, on 825.3 square miles of land. It ranks 18th of 83 in Michigan by population and 19th by land area.

Population
122,429
#18 of 83 in Michigan · #527 in US
Area
825.3 sq mi
#19 of 83 in Michigan · #1,025 in US
Density
148 / sq mi
#22 of 83 in Michigan · #696 in US
Median household income
$78,772
#9 of 83 in Michigan · #518 in US

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

Allegan County within Michigan. Pin: Lansing.

Measure from here

Tools and pages that start from Allegan County

Allegan County population, land area and income

Allegan County had 122,429 residents in the Census Vintage 2024 estimate, on 825.3 square miles of land. It ranks 18th of 83 in Michigan by population and 19th by land area. That works out to 148.4 people per square mile, 1.5 times the US average of 96.3, and in the top quarter nationally.

The median county-equivalent in Michigan has 38,041 residents, so Allegan County is 3.2 times that size.

Its SAIPE 2023 median household income of $78,772 is in the top quarter among 3,143 counties with an estimate.

National rank among 3,144

Population

122,429

3144th1st

527th of 3,144 (US)

Land area

825 sq mi

3144th1st

1025th of 3,144 (US)

Density

148.4 / sq mi

3144th1st

696th of 3,144 (US)

Median household income

$78,772

3143rd1st

518th of 3,143 (US)

Rank within Michigan (83)

Population

122,429

83rd1st

18th of 83 (MI)

Land area

825 sq mi

83rd1st

19th of 83 (MI)

Density

148.4 / sq mi

83rd1st

22nd of 83 (MI)

Median household income

$78,772

83rd1st

9th of 83 (MI)

How Allegan County's population changed since 2020

Allegan County gained 1,768 residents between the July 2020 and July 2024 estimates, a rise of 1.5%. That ranks 35th of 83 in Michigan for growth. The median Michigan county changed by +0.9%, and the state as a whole by +0.7%.

Since the April 2020 estimates base, Allegan County recorded 5,137 births and 5,182 deaths, a natural change of -45. Net international migration added +480 and net domestic migration, people moving to or from other US counties, came to +1,473. The largest single component was domestic migration, which added 1,473 people.

120.7k2020121.1k2021121.3k2022121.9k2023122.4k2024
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
5,137
Deaths
5,182
Net international migration
+480
Net domestic migration
+1,473
Change, July 2023 to July 2024
+555

Where Allegan County is

The Census internal point of Allegan County is at 42.421300, -86.261400. It sits in UTM zone 16N. The map shades Michigan's 83 county-equivalents by population change from 2020 to 2024, darker for faster growth, with Allegan County outlined. Dots are towns of 1,000+ people with residents in it.

Calhoun County: -0.3%Benzie County: +2.9%Newaygo County: +2.8%Antrim County: +4.6%Montcalm County: +4.0%Kalamazoo County: +1.1%Isabella County: +0.9%Ingham County: +1.9%Jackson County: +0.0%Kent County: +2.2%Oceana County: +1.1%Roscommon County: +2.0%Clare County: +1.8%Gladwin County: +2.5%Branch County: +2.9%Iosco County: +0.7%Bay County: -1.1%Shiawassee County: -0.0%Ionia County: -1.0%Otsego County: +3.8%Alcona County: +4.3%Missaukee County: +1.1%Crawford County: +4.7%Lapeer County: +0.7%Arenac County: +0.5%Gogebic County: -0.9%Marquette County: +2.2%Alpena County: +0.1%Lenawee County: -1.6%Berrien County: -1.1%Leelanau County: +2.5%Clinton County: +1.1%Alger County: -1.6%Gratiot County: -0.8%St. Joseph County: +0.4%Van Buren County: +0.7%Dickinson County: +0.3%Charlevoix County: +0.3%Sanilac County: -0.5%Wexford County: +2.3%Houghton County: +2.1%Saginaw County: -1.1%Kalkaska County: +3.8%Ottawa County: +3.1%Presque Isle County: +1.8%Eaton County: +0.3%Barry County: +2.3%Lake County: +7.5%Cheboygan County: +1.5%Wayne County: -1.0%Macomb County: +0.7%Oscoda County: +4.4%Emmet County: -0.5%Ontonagon County: +0.4%Schoolcraft County: +1.5%Monroe County: +0.7%Tuscola County: -1.0%Luce County: -1.3%Menominee County: -1.7%Mason County: +0.2%Muskegon County: +1.5%Baraga County: +0.3%Genesee County: -0.9%Grand Traverse County: +1.3%Washtenaw County: +0.5%Huron County: -1.9%Cass County: -0.0%Delta County: -0.5%Montmorency County: +7.2%Oakland County: +1.9%Chippewa County: -1.5%Keweenaw County: +5.0%Hillsdale County: -0.3%Manistee County: +1.8%Allegan County: +1.5%Mecosta County: +3.8%Iron County: +0.8%Osceola County: +2.5%St. Clair County: -0.1%Livingston County: +1.5%Ogemaw County: +1.0%Midland County: +0.6%Mackinac County: +3.1%
Change 2020 to 2024
  1. < -0.5%
  2. < +0.5%
  3. < +1.5%
  4. < +2.5%
  5. ≥ +2.5%
no data

Orange pin: Allegan County internal point. Dark pin: Lansing.

Internal point

Decimal
42.421300, -86.261400
DMS
42°25'16.68"N 86°15'41.04"W
UTM
16N 560764.1E 4696818.6N
Geohash
dpd9m4d3g
Plus code
86JMCPCQ+GC

Towns in Allegan County

8 incorporated places of 1,000+ people have residents in Allegan County, 28,548 people together, or 23% of the county. Each figure counts only the part of the town inside Allegan County; towns marked "part" extend into another county. The largest is Holland with 7,931.

  1. 01Holland (part)7,931
  2. 02Allegan5,152
  3. 03Wayland4,543
  4. 04Otsego4,036
  5. 05Plainwell3,736
  6. 06Fennville1,733
  7. 07Douglas1,412
  8. 08South Haven (part)5
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering Allegan County

The Census 2024 county adjacency file lists 8 neighbors for Allegan County, including 3 across a state line. The most populous is Lake County, IL, with 718,604 residents. Distances run between Census internal points in a straight line.

Distance to Lansing and the nearest big city

Lansing is 89.5 miles ENE of Allegan County's internal point in a straight line. The nearest place of 100,000 or more is Grand Rapids, MI (population 200,117), 48.3 miles away. The nearest place of 10,000 or more is Holland, MI (population 35,023), 25.3 miles away.

Allegan County FIPS code

The FIPS code of Allegan County is 26005: state code 26 for Michigan plus county code 005. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $78,772.

Questions people ask

What is the population of Allegan County, Michigan?

The Census Vintage 2024 estimate for July 1, 2024 is 122,429. That is up 1,768 people (1.5%) from the July 2020 estimate of 120,661.

What is the FIPS code of Allegan County?

26005. The first two digits (26) are Michigan; the last three (005) identify the county.

What is the largest town in Allegan County?

Holland, with 7,931 residents inside Allegan County in 2024 (35,023 across all 2 counties it spans).

Which counties border Allegan County?

8 county-equivalents border it in the Census 2024 adjacency file: Lake County, IL; Kent County, MI; Ottawa County, MI; Kalamazoo County, MI; Racine County, WI; Kenosha County, WI; Van Buren County, MI; Barry County, MI.

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.