What is the population of Bay County?

The population of Bay County, MI is 102,387.

Where is Bay County located?

Bay County, MI is located at latitude 43.7213700 and longitude -83.9418400. It is in United States.

What is the area of Bay County?

The area of Bay County, MI is 1634 km².

What is the elevation of Bay County?

Bay County, MI has an elevation of 176 meters (577 feet) above sea level.

What time zone is Bay County in?

Bay County, MI is in the America/Detroit time zone.

How has the population of Bay County changed?

The population of Bay County, MI has decreased from 107,771 (2010) to 102,387 (2020), a change of -5%.

Bay County, Michigan

Bay County: county in Michigan, United States

About

Bay County is a county located in the U.S. state of Michigan. As of the 2010 census, the population was 107,771 and a population density of 66 people per km². After 10 years in 2020 county had an estimated population of 102,387 inhabitants. Its county seat is Bay City. The county was created 169 years ago in 1856.

Bay County locator map — Location of Bay County on Michigan map.

County Snapshot

Bay County at a glance

Bay County currently has 8 quality-checked populated place pages linked on MapSof, making it easier to jump from the county overview into local city pages.

Browse county places

Mapped populated places

These counts use a stricter populated-place filter so the main lists stay focused on real city and town pages.

Michigan counties

Open related pages

Largest city

Bay City

Population 32,717

Quick Facts about Bay County

Population	102,387 (2020)
Country	United States of America
State	Michigan (United States)
Area	1634 km²
Water as percent of area	30%
Land as percent of area	70%
Latitude & Longitude	43.7214,-83.9418
Named for	Saginaw Bay
Capital	Bay City
Establishment	January 01, 1857
Time Zone	America/Detroit
Local time	21:05:05 (17th April 2026)
Density	63 Pop. per km² as of 2020
Population growth	-5.26% (2010-2020)
Weather	64℉ Partly Sunny 7-days weather

Bay City Masonic Temple in 2014 image

Geography

Bay County is located at 43°43'17"N 83°56'31"W (43.7213700, -83.9418400). It has 2 neighbors: Arenac County and Saginaw County.

Bay County map

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The largest city of Bay County is Bay City with a population of 32,717. Other cities include, Essexville population 3,244, Pinconning population 2,337 and Auburn population 2,069. See all Bay County cities & populated places.

Bay County Populated Places

Cities, towns, neighborhoods & other populated places in Bay County.

City Name	Population	Title
Bay City	32,717	City in Bay County, Michigan, USA
Kawkawlin	4,657	Township in Bay County, Michigan
Essexville	3,244	City in Bay County in the U.
Pinconning	2,337	City in Bay County, Michigan, United States of America
Auburn	2,069	City in Michigan, USA
Mount Forest	1,369	Township of Michigan
Bentley	836	Township in Bay County, Michigan
Beaver	517	Township in Newaygo County, Michigan

Weather

64°F

Partly Sunny

3 to 10 mph E Friday

Partly sunny, with a high near 64. East wind 3 to 10 mph.

7-Day Forecast

Official website of Bay County

Official Website

Bay County has 2 neighbours.

Arenac County county in Michigan, United States
Saginaw County county in Michigan, United States

Bay City

Demographics

According to census records, the population of Bay County decreased by 5.26% in 10 years.

Year	Population	% Change	Method
2010	107,771	-	census
2011	107,417	-0.33%	estimation process
2012	106,967	-0.42%	estimation process
2013	106,794	-0.16%	estimation process
2014	106,046	-0.71%	estimation process
2015	105,237	-0.77%	estimation process
2016	104,411	-0.79%	estimation process
2017	104,045	-0.35%	estimation process
2018	103,702	-0.33%	estimation process
2019	103,126	-0.56%	estimation process
2020	102,387	-0.72%	estimation process

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Other places with the same name (1)

Bay County, Florida county in Florida, United States with a population of 171,322 people.

Michigan Other Counties (more counties)

County Name	Population	Title
Wayne County	1,740,623	County in Michigan, United States
Oakland County	1,253,459	County in Michigan, United States
Macomb County	870,791	County in Michigan, United States
Detroit	665,369	The twenty-fourth most populous city in the United States and the center of the Detroit metropolitan area.
Kent County	658,708	County in Michigan, United States
Genesee County	404,794	County in Michigan, United States
Washtenaw County	366,473	County in Michigan, United States
Ottawa County	294,635	County in Michigan, United States
Ingham County	290,609	County in Michigan, United States
Kalamazoo County	265,988	County in Michigan, United States
Grand Rapids	200,031	The second most populous city in Michigan.
Livingston County	192,335	County in Michigan, United States
Saginaw County	189,868	County in Michigan, United States
Muskegon County	173,883	County in Michigan, United States
Saint Clair County	159,293	County in Alabama, United States
Jackson County	156,920	County in Michigan, United States