Detroit-Warren-Dearborn, MI Metro Area
The Detroit-Warren-Dearborn, MI metro area is made up of 6 counties in Michigan: Wayne, Oakland, Macomb, Livingston, St. Clair, and Lapeer, largest first. About 4,390,913 people lived there on July 1, 2025 (Census estimate), about the same as in April 2020.
- Population, July 2025
- 4,390,913 about the same as in April 2020
- Type
- Metropolitan statistical area
- Counties
- 6: 3 central, 3 outlying
- Land area
- 3,893 sq mi (10,083 km²)
- Time zone
- Eastern TimeUTC-05:00 in January; UTC-04:00 in July
- State
- Michigan
- Combined statistical area
- Detroit-Warren-Ann Arbor, MI
- CBSA code
- 19820
Counties in the Detroit-Warren-Dearborn, MI metro area, largest first
| County | Role | Population, July 2025 | Share of the area |
|---|---|---|---|
| Wayne County | Central | 1,769,038 | 40.3% |
| Oakland County | Central | 1,288,337 | 29.3% |
| Macomb County | Central | 886,221 | 20.2% |
| Livingston County | Outlying | 197,315 | 4.5% |
| St. Clair County | Outlying | 160,486 | 3.7% |
| Lapeer County | Outlying | 89,516 | 2.0% |
A central county holds the area’s core, an urban area of at least 50,000 people. An outlying county is in the area because of commuting: at least a quarter of its workers have jobs in the central counties, or at least a quarter of the people working there live in them. A county belongs to one metro or micro area at most, and it counts whole, countryside included.
Principal cities, largest first
- Detroit638,530 people
- Warren137,928 people
- Dearborn107,423 people
- Livonia93,851 people
- Troy87,898 people
- Farmington Hills83,515 people
- Southfield76,236 people
- Novi66,717 people
- Pontiac62,104 people
OMB names the area after its largest principal cities. A principal city is the area’s largest city, plus any other city that is very large or a big job center, and smaller ones with at least as many jobs as working residents (2020 Census and commuting figures). People counts are American Community Survey 2020–2024 5-year estimates.
Metropolitan divisions
The Detroit-Warren-Dearborn, MI metro area is big enough to be split into 2 metropolitan divisions, each a job center with the counties that commute to it.
- Detroit-Dearborn-Livonia, MI: Wayne County
- Warren-Troy-Farmington Hills, MI: Lapeer County, Livingston County, Macomb County, Oakland County, and St. Clair County
Part of the Detroit-Warren-Ann Arbor, MI combined statistical area
OMB joins neighboring metro and micro areas into a combined statistical area when enough people commute between them. The other 4 areas in this one, largest first:
- Flint, MI Metro Area401,093 people
- Ann Arbor, MI Metro Area370,214 people
- Monroe, MI Metro Area156,004 people
- Adrian, MI Micro Area97,779 people
Bordering metro and micro areas, nearest first
Areas with a county on this area’s edge. Distances are straight lines between the areas’ largest cities.
- Ann Arbor, MI Metro Area33 mi west
- Monroe, MI Metro Area35 mi southwest
- Flint, MI Metro Area53 mi northwest
- Jackson, MI Metro Area67 mi west
- Owosso, MI Micro Area69 mi northwest
- Lansing-East Lansing, MI Metro Area78 mi west
Before using this answer on a form
A metro or micro area is a statistical area that OMB draws for federal statistics. It is not a city, a local government or a mailing address, and it is not a measure of urban and rural: whole counties count, rural parts included. Programs that use metro areas, such as housing income limits or wage rates, can use their own version of these lists; check the program’s own list for an address.
Find the metro area where you are now, find your county, or see every metro and micro area by population.