Sullivan, MI demographics:
population, income, and more

Total population
2,667
0.0% year-over-year change
Median household income
$76,736/yr
6.2% year-over-year change
Housing units
1,106
3.2% year-over-year change

Sullivan population

How many people live in Sullivan

Sullivan is home to 2,667 residents, according to the most recent Census data. Gender-wise, 47.4% of Sullivan locals are male, and 52.6% are female.

Total population
2,667
0.0% year-over-year change
Gender ratio
Male
47.4%
1,265
Female
52.6%
1,402
Value Percent YoY change
Male 1,265 47.4% -2.7%
Female 1,402 52.6% 2.6%
A higher population often means more rental variety and livelier areas. The gender balance—how many men live here compared to women—can reveal a lot about the community and the lifestyles of its residents. Use this info to get a sense of the area's pace and personality.

Age demographics

The median age in Sullivan is 42, with the population distributed as follows: about 16.8% are children under 15, then 9.8% are in the 15 to 24 age group. Adults between 25 and 44 make up 23.9% of the population, while another 26.1% fall into the 45 to 64 bracket. Finally, around 23.4% are 65 or older.

Median age
42
Age breakdown
Under 15
16.8%
15 to 24
9.8%
25 to 44
23.9%
45 to 64
26.1%
Over 65
23.4%
Value Percent YoY change
Under 15 447 16.8% -4.3%
15 to 24 262 9.8% 0.0%
25 to 44 638 23.9% -0.9%
45 to 64 696 26.1% -1.3%
Over 65 625 23.4% 6.3%
The age composition helps you get insight into who lives in the area. A younger population might mean a more active, fast-paced vibe, while an older one could suggest a quieter, slower lifestyle. If there's a balanced makeup, you’re likely to find a variety of services, housing types, and community spaces that cater to different life stages.

Racial makeup

In Sullivan, 98.7% of the population are US-born citizens, while 1.2% have gained naturalized citizenship. At the same time, 0.1% of residents are non-citizens. As for race, 93.3% of locals are Caucasian, 1.8% are African American and 0.7% have Asian roots. There’s also a share of 3.3% that includes residents with two or more races.

Citizenship
U.S.-born citizens
98.7%
Non-U.S.-born citizens
1.2%
Non-citizens
0.1%
Value Percent YoY change
U.S.-born citizens 2,633 98.7% -0.1%
Non-U.S.-born citizens 33 1.2% 10.0%
Non-citizens 2 0.1% 0.0%
Racial breakdown
White
93.3%
Black or African American
1.8%
American Indian and Alaska Native
0.3%
Asian
0.7%
Native Hawaiian and other Pacific Islander
0%
Two or more races
3.3%
Other
0.5%
Value Percent
White 2,489 93.3%
Black or African American 49 1.8%
American Indian and Alaska Native 9 0.3%
Asian 18 0.7%
Native Hawaiian and other Pacific Islander 1 0%
Two or more races 87 3.3%
Other 14 0.5%

Households in Sullivan

A peek inside Sullivan households

Sullivan has 1,069 households, with an average of 2 members in each. Of these, 73% are families, while the remaining 27% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
1,069
3.4% year-over-year change
Average people per household
2
Non-family households
289
Family households
780
Value Percent YoY change
Non-family households 289 27% 8.2%
Family households 780 73% 1.8%
The mix between family and non-family households gives a glimpse into daily life. A higher percentage of families might mean more parks and schools, while more non-family setups can mean flexible housing and diverse living styles. For renters, this can signal what kinds of homes are common and can help you figure out if the area matches your lifestyle.

Housing in Sullivan

The housing landscape of Sullivan

Sullivan's housing consists of 1,106 units, with 90.3% being detached single-family homes ideal for those wanting space. Attached options, including duplexes and townhouses, make up 4.6% and offer a more compact, shared living style. Then there are the multifamily buildings in the area, and for those seeking flexibility, non-traditional options like mobile homes account for 3.3% of the housing landscape.

Housing units
1,106
3.2% year-over-year change
Housing types
Value Percent
1 unit, detached 998 90.3%
1 unit, attached 51 4.6%
2 units 9 0.8%
3 or 4 units 1 0.1%
5 to 9 units 6 0.5%
10 to 19 units 3 0.3%
20 to 49 units 1 0.1%
Mobile home 36 3.3%
Homes built since 2020
29
38.1% year-over-year change

The age of buildings in Sullivan

In Sullivan, the median construction year is 1980. About 7.3% of homes were built before the 1940s, with another 5.8% going up by 1949. Most development happened in the second half of the 20th century. Then, 15.2% of homes were added from 2000 to 2009, 4.5% between 2010 and 2019, and 2.6% are part of the newest wave of development.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 81 7.3% -16.5%
Built between 1940 and 1949 64 5.8% 56.1%
Built between 1950 and 1959 99 9% -2.9%
Built between 1960 and 1969 141 12.8% -11.3%
Built between 1970 and 1979 195 17.6% 20.4%
Built between 1980 and 1989 97 8.8% 6.6%
Built between 1990 and 1999 181 16.4% 1.7%
Built between 2000 and 2009 168 15.2% -2.3%
Built between 2010 and 2019 50 4.5% 2.0%
Built in 2020 or later 29 2.6% 38.1%
As a renter, knowing when homes were built helps you understand the potential condition and design of rental units. Newer builds may have more contemporary layouts, while older homes can offer character or larger lots, depending on the area.

Sullivan occupancy rates

Out of the 1,069 occupied housing units in Sullivan, 93.4% are owner-occupied, while 6.6% are lived in by tenants. Meanwhile, 3.3% of all homes on the local market sit vacant.

Occupied housing units
1,069
3.4% year-over-year change
Occupancy breakdown
Renter occupied
70
Owner occupied
999
Value Percent YoY
change
Renter occupied 70 6.6% 40.0%
Owner occupied 999 93.4% 1.5%
Unoccupied housing units
3.3%
Unoccupied housing units refer to homes that are currently without residents—whether they're waiting for renters or owners, used seasonally, or simply unclaimed. A higher share of empty homes may mean more housing availability, while a low number can reflect a tighter market with more competition. This, along with the renter-vs.-owner mix, helps paint a clearer picture of what types of housing and services are likely to be available in the area.

Sullivan housing costs

Housing costs in Sullivan come to a median of $1,010 per month, while tenants specifically pay a median gross rent of $1,060.

Median housing costs per month
$1,010/month
This figure sums up typical monthly housing costs for all households in the area. If you own, it includes mortgage payments in addition to property taxes, insurance and HOA fees. If you rent, it accounts for rent plus extras like utilities. It’s useful for seeing how local living expenses stack up compared to other places.
Median gross rent in Sullivan
$1,060/month
Gross rent gives a more complete look at what renters actually pay, including not just base rent, but also utilities and fees. It’s a key number for evaluating rental affordability in your area of interest and understanding how it compares to nearby locations.

Education in Sullivan

Sullivan education at a glance

About 39.4% of the population in Sullivan went to high school, while 26.3% pursued college studies. Another 13.6% earned an associate degree and 11.9% hold a bachelor’s. Meanwhile, 7.3% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 35 1.6% 12.9%
High school diploma 839 39.4% -1.9%
College diploma 560 26.3% 6.3%
Associate degree 289 13.6% 14.2%
Bachelor's degree 253 11.9% -10.3%
Graduate degree 155 7.3% -2.5%
A community’s education mix can offer insights into the local economy and housing market. Higher levels of education often align with more job opportunities and stable incomes, which can increase demand for homes and influence both rent prices and rental availability.

Income in Sullivan

How much people earn in Sullivan

The average annual household income in Sullivan was $89,361 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a -0.9% change from the previous year. At the same time, the median income stood at $76,736, reflecting a +6.2% shift over the same period.

Average household income in Sullivan
$89,361/year
-0.9% year-over-year change
Median household income in Sullivan
$76,736/year
6.2% year-over-year change

Sullivan income by age

In Sullivan, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $78,420. Those with someone between 45 and 64 in charge, often well established professionally, earn $89,944 overall. Younger households, where the main provider is under 25 and just starting out, report a median income of $68,060, while those led by someone over 65, many of whom may be retired, have about $58,795 in earnings. Overall, 93.4% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
Under 25 $68,060 61.9%
25 - 44 $78,420 4.3%
45 - 64 $89,944 1.4%
Over 65 $58,795 3.6%
Above poverty level
2,451
Below poverty level
174
Value Percent YoY
change
Above poverty level 2,451 93.4% 0.7%
Below poverty level 174 6.6% -2.2%

Employment in Sullivan

Workforce and job types in Sullivan

64.5% of the working population are employed in professional or administrative positions, while 35.5% are in hands-on or service-based jobs. Also, 8.8% run their own businesses, 72.3% are employed by private companies, and 8.7% work in the public sector.

Workforce demographics

White collar
800
Blue collar
440
Value Percent YoY change
White collar 800 64.5% 4.7%
Blue collar 440 35.5% 1.6%
Employer type
Self employees
8.8%
Private companies
72.3%
Governmental workers
8.7%
Not for profit companies
10.2%
Value Percent YoY change
Self employees 109 8.8% 4.8%
Private companies 896 72.3% 1.1%
Governmental workers 108 8.7% 1.9%
Not for profit companies 127 10.2% 27.0%

Transportation in Sullivan

How people get around in Sullivan

Commuting methods vary: 97.2% of residents travel by personal vehicle and 2.8% prefer to walk, while the remaining share relies on public transit or on two wheelers to get from A to B.

Means of transportation
Value Percent YoY change
Car 1,127 97.2% 4.3%
Walk 33 2.8% 6.5%
Understanding how locals get to work can help you plan your own routine. High car usage might mean you’ll need a vehicle, while strong public transit or walkability could save you the hassle. Commute times also play a big role in quality of life—shorter trips can give you more time for the things you enjoy.

What is the median and average household income in Sullivan by zipcode?

Zipcode Population Number of households Median income Average income
49415 6,330 2,602 $81,908 $106,090
49451 6,298 2,230 $71,563 $88,526

Explore more communities

FAQs about Sullivan demographics 

What is the total population of Sullivan?

Sullivan has a total population of 2,667 residents, according to the latest release from the U.S. Census Bureau: the 2019-2023 American Community Survey (ACS) 5-year estimates. This figure changed by +0.0% compared to a year ago.

What is the gender ratio in Sullivan?

The gender ratio in Sullivan is as follows:
  • 47.4% males (1,265 residents)
  • 52.6% females (1,402 residents)

What is the median age in Sullivan?

The median age in Sullivan is 42.

What is the age distribution of the population in Sullivan?

The age distribution in Sullivan is as follows:
  • Under 15: 16.8% (447 residents)
  • Ages 15-24: 9.8% (262 residents)
  • Ages 25-44: 23.9% (638 residents)
  • Ages 45-64: 26.1% (696 residents)
  • Over 65: 23.4% (625 residents)

What is the racial and ethnic makeup of Sullivan?

The racial and ethnic makeup of Sullivan is as follows:
  • White: 93.3% (2,489 residents)
  • Black or African American: 1.8% (49 residents)
  • American Indian and Alaska Native: 0.3% (9 residents)
  • Asian: 0.7% (18 residents)
  • Native Hawaiian and Other Pacific Islander: 0% (1 residents)
  • Two or More Races: 3.3% (87 residents)
  • Other: 0.5% (14 residents)

What percentage of the population in Sullivan are U.S.-born citizens?

U.S.-born citizens represent 98.7% of the population in Sullivan.

How many housing units are there in Sullivan?

There are 1,106 housing units in Sullivan, reflecting a +3.2% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

How many households are in Sullivan and what is the average household size?

Sullivan has a total of 1,069 households, with an average of 2 people in each.

What is the median household income in Sullivan?

Sullivan has a median household income of $76,736, representing a +6.2% shift from the previous year, according to the U.S. Census Bureau.

What is the job market overview for Sullivan?

Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 64.5% (800 residents)
  • Blue-collar workers: 35.5% (440 residents)

Places of employment:
  • Self-employed: 8.8% (109 residents)
  • Private companies: 72.3% (896 residents)
  • Governmental workers: 8.7% (108 residents)
  • Not-for-profit companies: 10.2% (127 residents)

Data source & methodology

The demographic data on this page was sourced from the latest U.S. Census Bureau release—the 2019–2023 American Community Survey (ACS) 5-year estimates.

The information, issued annually, is compiled and published by the Point2Homes Research Team as soon as new data becomes available.

No representation, guarantee, or warranty is made concerning the accuracy or completeness of modified or aggregated information for particular areas.

Page last updated: September 2025