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Where am ILOCATED

Monroe, MI Metro Area

The Monroe, MI metro area is one county in Michigan: Monroe County. About 156,004 people lived there on July 1, 2025 (Census estimate), 0.8% more than in April 2020.

Monroe County, centralMonroe
Monroe County in Michigan
Population, July 2025
156,004 0.8% more than in April 2020
Type
Metropolitan statistical area
County
Monroe County
Land area
549 sq mi (1,423 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
33780
Open this area in the metro area finder

The county in the Monroe, MI metro area

CountyRolePopulation, July 2025
Monroe CountyCentral156,004

A central county holds the area’s core, an urban area of at least 50,000 people. This area has no outlying counties: no neighboring county sends enough commuters to join it. A county belongs to one metro or micro area at most, and it counts whole, countryside included.

Principal city

  1. Monroe20,320 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.

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:

  1. Detroit-Warren-Dearborn, MI Metro Area4,390,913 people
  2. Flint, MI Metro Area401,093 people
  3. Ann Arbor, MI Metro Area370,214 people
  4. 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.

  1. Toledo, OH Metro Area20 mi southwest
  2. Ann Arbor, MI Metro Area31 mi northwest
  3. Adrian, MI Micro Area34 mi west
  4. Detroit-Warren-Dearborn, MI Metro Area35 mi northeast

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.

See this area on Census.gov ↗