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Michigan statistical areas

The U.S. State of Michigan currently has 43 statistical areas that have been delineated by the Office of Management and Budget (OMB). On July 21, 2023, the OMB delineated eight combined statistical areas, 16 metropolitan statistical areas, and 19 micropolitan statistical areas in Michigan.[1] As of 2025, the largest of these was the Detroit–Warren–Ann Arbor, MI CSA, comprising the area surrounding Michigan's largest city, Detroit.

Statistical areas

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The Office of Management and Budget (OMB) has designated more than 1,000 statistical areas for the United States and Puerto Rico.[2] These statistical areas are important geographic delineations of population clusters used by the OMB, the United States Census Bureau, planning organizations, and federal, state, and local government entities.

The OMB defines a core-based statistical area (CBSA) as the county or counties (or county-equivalents) surrounding at least one densely-settled core of at least 10,000 population,[2] "plus adjacent counties having a high degree of social and economic integration with the core as measured through commuting ties with the counties containing the core".[2] The OMB further divides a CBSA based on population into a metropolitan statistical area (MSA) for those with at least 50,000 people or a micropolitan statistical area (μSA) for those with 10,000 to 49,999 people.[2]

The OMB defines a combined statistical area (CSA) as two or more adjacent CBSAs where the employment interchange rate (percent commuting from A to B plus percent commuting from B to A) is at least 15%.[2] A primary statistical area (PSA) includes all CSAs and any CBSA that is not a constituent of a combined statistical area.

The 43 United States statistical areas and 83 counties of the State of Michigan[a]
Combined statistical area[1] 2025 population (est.)[3] Core-based statistical area[1] 2025 population (est.)[3] County 2025 population (est.)[3] Metropolitan division[1] 2025 population (est.)[3]
Detroit–Warren–Ann Arbor, MI CSA 5,416,003 Detroit–Warren–Dearborn, MI MSA 4,390,913 Oakland County, Michigan 1,288,337 Warren–Troy–Farmington Hills, MI MD 2,621,875
Macomb County, Michigan 886,221
Livingston County, Michigan 197,315
St. Clair County, Michigan 160,486
Lapeer County, Michigan 89,516
Wayne County, Michigan 1,769,038 Detroit–Dearborn–Livonia, MI MD 1,769,038
Flint, MI MSA 401,093 Genesee County, Michigan 401,093 none
Ann Arbor, MI MSA 370,214 Washtenaw County, Michigan 370,214
Monroe, MI MSA 156,004 Monroe County, Michigan 156,004
Adrian, MI μSA 97,779 Lenawee County, Michigan 97,779
Grand Rapids–Wyoming, MI CSA 1,527,054 Grand Rapids–Wyoming–Kentwood, MI MSA 1,183,645 Kent County, Michigan 675,232
Ottawa County, Michigan 308,459
Montcalm County, Michigan 69,406
Ionia County, Michigan 66,557
Barry County, Michigan 63,991
Muskegon–Norton Shores, MI MSA 177,901 Muskegon County, Michigan 177,901
Holland, MI μSA 123,188 Allegan County, Michigan 123,188
Big Rapids, MI μSA 42,320 Mecosta County, Michigan 42,320
Lansing–East Lansing–Owosso, MI CSA 547,403 Lansing–East Lansing, MI MSA 479,722 Ingham County, Michigan 289,709
Eaton County, Michigan 109,581
Clinton County, Michigan 80,432
Owosso, MI μSA 67,681 Shiawassee County, Michigan 67,681
Kalamazoo–Battle Creek–Portage, MI CSA 458,171 Kalamazoo–Portage, MI MSA 263,795 Kalamazoo County, Michigan 263,795
Battle Creek, MI MSA 133,408 Calhoun County, Michigan 133,408
Sturgis, MI μSA 60,968 St. Joseph County, Michigan 60,968
Saginaw–Midland–Bay City, MI CSA 373,565 Saginaw, MI MSA 187,688 Saginaw County, Michigan 187,688
Bay City, MI MSA 102,123 Bay County, Michigan 102,123
Midland, MI MSA 83,754 Midland County, Michigan 83,754
South Bend–Elkhart–Mishawaka, IN-MI CSA 813,247
204,121 (MI)
South Bend–Mishawaka, IN-MI MSA 324,538
51,677 (MI)
St. Joseph County, Indiana 272,861
Cass County, Michigan 51,677
Elkhart–Goshen, IN MSA 208,774 Elkhart County, Indiana 208,774
Niles, MI MSA 152,444 Berrien County, Michigan 152,444
Warsaw, IN μSA 80,892 Kosciusko County, Indiana 80,892
Plymouth, IN μSA 46,599 Marshall County, Indiana 46,599
none Jackson, MI MSA 159,552 Jackson County, Michigan 159,552
Traverse City, MI MSA 156,972 Grand Traverse County, Michigan 96,729
Leelanau County, Michigan 22,982
Kalkaska County, Michigan 18,693
Benzie County, Michigan 18,568
Mount Pleasant–Alma, MI CSA 105,881 Mount Pleasant, MI μSA 64,691 Isabella County, Michigan 64,691
Alma, MI μSA 41,190 Gratiot County, Michigan 41,190
none Marquette, MI μSA 68,064 Marquette County, Michigan 68,064
Cadillac, MI μSA 49,719 Wexford County, Michigan 34,445
Missaukee County, Michigan 15,274
Marinette–Iron Mountain, WI-MI CSA 96,090
48,768 (MI)
Marinette, WI-MI μSA 65,515
22,941 (MI)
Marinette County, Wisconsin 42,574
Menominee County, Michigan 22,941
Iron Mountain, MI-WI μSA 30,575
25,827 (MI)
Dickinson County, Michigan 25,827
Florence County, Wisconsin 4,748
none Coldwater, MI μSA 45,993 Branch County, Michigan 45,993
Hillsdale, MI μSA 45,738 Hillsdale County, Michigan 45,738
Houghton, MI μSA 40,028 Houghton County, Michigan 37,842
Keweenaw County, Michigan 2,186
Escanaba, MI μSA 36,582 Delta County, Michigan 36,582
Sault Ste. Marie, MI μSA 36,081 Chippewa County, Michigan 36,081
Petoskey, MI μSA 33,775 Emmet County, Michigan 33,775
Ludington, MI μSA 29,040 Mason County, Michigan 29,040
Alpena, MI μSA 28,853 Alpena County, Michigan 28,853
none Van Buren County, Michigan 76,071
Tuscola County, Michigan 52,680
Newaygo County, Michigan 51,622
Sanilac County, Michigan 40,083
Clare County, Michigan 31,543
Huron County, Michigan 30,530
Oceana County, Michigan 27,177
Otsego County, Michigan 26,080
Gladwin County, Michigan 26,077
Charlevoix County, Michigan 26,036
Cheboygan County, Michigan 25,793
Manistee County, Michigan 25,656
Iosco County, Michigan 25,266
Antrim County, Michigan 24,698
Roscommon County, Michigan 23,914
Osceola County, Michigan 23,516
Ogemaw County, Michigan 21,121
Arenac County, Michigan 15,068
Gogebic County, Michigan 14,285
Crawford County, Michigan 13,722
Lake County, Michigan 13,182
Presque Isle County, Michigan 13,128
Iron County, Michigan 11,757
Mackinac County, Michigan 11,236
Alcona County, Michigan 10,556
Montmorency County, Michigan 9,842
Oscoda County, Michigan 8,723
Alger County, Michigan 8,641
Schoolcraft County, Michigan 8,187
Baraga County, Michigan 8,169
Luce County, Michigan 6,339
Ontonagon County, Michigan 5,823
State of Michigan 10,127,884
The 35 core-based statistical areas of the State of Michigan[b]
2025 rank Core-based statistical area[1] Population
2025 estimate[3] Change 2020 Census[4] Change 2010 Census[5]
1 Detroit–Warren–Dearborn, MI MSA 4,390,913−0.03%4,392,041+2.23%4,296,250
2 Grand Rapids–Wyoming–Kentwood, MI MSA 1,183,645+2.92%1,150,015+9.23%1,052,843
3 Lansing–East Lansing, MI MSA 479,722+1.38%473,203+1.98%464,036
4 Flint, MI MSA 401,093−1.26%406,211−4.60%425,790
5 Ann Arbor, MI MSA 370,214−0.55%372,258+7.97%344,791
6 Kalamazoo–Portage, MI MSA 263,795+0.81%261,670+4.53%250,331
7 Saginaw, MI MSA 187,688−1.28%190,124−5.02%200,169
8 Muskegon–Norton Shores, MI MSA 177,901+1.18%175,824+2.11%172,188
9 Jackson, MI MSA 159,552−0.51%160,366+0.07%160,248
10 Traverse City, MI MSA 156,972+2.30%153,448+7.03%143,372
11 Monroe, MI MSA 156,004+0.77%154,809+1.83%152,021
12 Niles, MI MSA 152,444−1.21%154,316−1.59%156,813
13 Battle Creek, MI MSA 133,408−0.67%134,310−1.35%136,146
14 Holland, MI μSA 123,188+2.23%120,502+8.16%111,408
15 Bay City, MI MSA 102,123−1.67%103,856−3.63%107,771
16 Adrian, MI μSA 97,779−1.65%99,423−0.47%99,892
17 Midland, MI MSA 83,754+0.31%83,494−0.16%83,629
18 Owosso, MI μSA 67,681−0.61%68,094−3.62%70,648
19 Marquette, MI μSA 68,064+3.10%66,017−1.58%67,077
20 Mount Pleasant, MI μSA 64,691+0.46%64,394−8.42%70,311
21 Sturgis, MI μSA 60,968+0.05%60,939−0.58%61,295
22 South Bend–Mishawaka, IN-MI MSA (MI) 51,677+0.17%51,589−1.35%52,293
23 Cadillac, MI μSA 49,719+2.04%48,725+2.40%47,584
24 Coldwater, MI μSA 45,993+2.52%44,862−0.85%45,248
25 Hillsdale, MI μSA 45,738−0.02%45,746−2.02%46,688
26 Big Rapids, MI μSA 42,320+6.56%39,714−7.21%42,798
27 Alma, MI μSA 41,190−1.37%41,761−1.68%42,476
28 Houghton, MI μSA 40,028+1.58%39,407+1.61%38,784
29 Escanaba, MI μSA 36,582−0.87%36,903−0.45%37,069
30 Sault Ste. Marie, MI μSA 36,081−1.91%36,785−4.50%38,520
31 Petoskey, MI μSA 33,775−0.99%34,112+4.34%32,694
32 Ludington, MI μSA 29,040−0.04%29,052+1.21%28,705
33 Alpena, MI μSA 28,853−0.19%28,907−2.33%29,598
34 Iron Mountain, MI-WI μSA (MI) 25,827−0.46%25,947−0.84%26,168
35 Marinette, WI-MI μSA (MI) 22,941−2.39%23,502−2.19%24,029
Iron Mountain, MI-WI μSA 30,575+0.23%30,505−0.28%30,591
Marinette, WI-MI μSA 65,515+0.22%65,374−0.61%65,778
South Bend–Mishawaka, IN-MI MSA 324,538+0.01%324,501+1.65%319,224
The eight combined statistical areas of the State of Michigan[c]
2025 rank Combined statistical area[1] Population
2025 estimate[3] Change 2020 Census[4] Change 2010 Census[5]
1 Detroit–Warren–Ann Arbor, MI CSA 5,416,003−0.16%5,424,742+1.99%5,318,744
2 Grand Rapids–Wyoming, MI CSA 1,527,054+2.76%1,486,055+7.74%1,379,237
3 Lansing–East Lansing–Owosso, MI CSA 547,403+1.13%541,297+1.24%534,684
4 Kalamazoo–Battle Creek–Portage, MI CSA 458,171+0.27%456,919+2.04%447,772
5 Saginaw–Midland–Bay City, MI CSA 373,565−1.04%377,474−3.60%391,569
6 South Bend–Elkhart–Mishawaka, IN-MI CSA (MI) 204,121−0.87%205,905−1.53%209,106
7 Mount Pleasant–Alma, MI CSA 105,881−0.26%106,155−5.88%112,787
8 Marinette–Iron Mountain, WI-MI CSA (MI) 48,768−1.38%49,449−1.49%50,197
Marinette–Iron Mountain, WI-MI CSA 96,090+0.22%95,879−0.51%96,369
South Bend–Elkhart–Mishawaka, IN-MI CSA 813,247+0.13%812,199+1.78%798,005

See also

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Notes

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  1. An out-of-state area and its population are displayed in green. An area that extends into more than one state is displayed in purple. A purple population number over a black population number show the total population versus the in-state population. The state's abbreviation is also shown next to the in-state total.
  2. For CBSAs comprising populations from multiple states, they are listed twice to show both their intrastate population within that CBSA as well as the CBSA's total population. Only the intrastate population is ranked.
  3. For CSAs comprising populations from multiple states, they are listed twice to show both their intrastate population within that CSA as well as the CSA's total population. Only the intrastate population is ranked.

References

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  1. 1 2 3 4 5 6 Revised Delineations of Metropolitan Statistical Areas, Micropolitan Statistical Areas, and Combined Statistical Areas, and Guidance on Uses of the Delineations of These Areas (July 21, 2023). "0MB BULLETIN NO. 23-01" (PDF). Office of Management and Budget. Retrieved October 23, 2023.{{cite web}}: CS1 maint: multiple names: authors list (link)
  2. 1 2 3 4 5 "2020 Standards for Delineating Core Based Statistical Areas". Office of Management and Budget. July 16, 2021. Retrieved December 13, 2021.
  3. 1 2 3 4 5 6 "Annual Estimates of the Resident Population for Counties: April 1, 2020 to July 1, 2025". United States Census Bureau, Population Division. July 2025. Retrieved July 10, 2026.
  4. 1 2 "PROFILE OF GENERAL POPULATION AND HOUSING CHARACTERISTICS". U.S. Census Bureau. 2020. Retrieved May 21, 2024.
  5. 1 2 "Annual Estimates of the Resident Population for Counties: April 1, 2010 to July 1, 2019". U.S. Census Bureau. 2019. Retrieved May 21, 2024.
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44°20′48″N 85°24′37″W / 44.3467°N 85.4102°W / 44.3467; -85.4102 (State of Michigan)