Postal Codes

49240 ZIP Code

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ZIP code 49240 covers Grass Lake, Michigan, with a population of about 9,206 and a median household income of $95,307.

Population
9,20688 per square mile
Median age
45.66.9 points above the US average
Median household income
$95,3071.3× the Michigan median
Poverty rate
4.2%8.2 points below the US average
Typical home value
$350,945up 24.9% in five years
Median rent
$1,1781.1× the Michigan median
Degree or higher
32.8%2.2 points below the US average
Homeownership
93.7%28.7 points above the US average
Time zone
Eastern UTC-05:00observes daylight saving time
Businesses
122

Where 49240 is

Grass Lake, Michigan — the area the Census Bureau draws for this ZIP code. ZIP codes are sets of delivery routes rather than areas, so this is the Census approximation of one, not a Postal Service boundary.

People and households

American Community Survey 2019–2023 five-year estimates

Population9,206
Median age45.6
Family households72.1%
Born outside the US1.8%
Speaks a language other than English at home2.3%
White (non-Hispanic)94.9%
Black (non-Hispanic)0%
Asian (non-Hispanic)0.8%
Hispanic or Latino1.5%
Veterans8.5%
Population by age
MaleFemale0-45-910-1415-1920-2425-3435-4445-5455-6465-7475-8485+
Income and poverty

American Community Survey 2019–2023 five-year estimates

Median household income$95,307
Income per person$47,223
Poverty rate4.2%
Households on SNAP or cash assistance1.8%

Household income distribution

Under $10k1.3%
$10–15k2.5%
$15–20k0.9%
$20–25k1.2%
$25–30k2.2%
$30–35k0.5%
$35–40k6.0%
$40–45k2.1%
$45–50k2.4%
$50–60k8.4%
$60–75k11.3%
$75–100k14.6%
$100–125k16.8%
$125–150k5.6%
$150–200k13.6%
$200k or more10.5%

Income as declared to the IRS

Filed returns rather than survey responses, so this counts tax units and not households.

Tax returns filed4,680
Mean adjusted gross income$85,462
Returns declaring $200,000 or more6.2%
Returns, under $25k23.9%
Returns, $25k–$50k19.7%
Returns, $50k–$75k15.0%
Returns, $75k–$100k10.7%
Returns, $100k–$200k24.6%
Returns, $200k or more6.2%
Housing

American Community Survey 2019–2023 five-year estimates

Median home value$272,300
Median gross rent$1,178
Rent as a share of household income25.9%
Owner-occupied93.7%
Vacant homes7.1%
Median year built1983

What the homes are

Detached house90.1%
Attached house0.9%
2 to 4 units4.2%
5 to 19 units0.7%
Mobile home4%
Home values and rents today

Zillow Home Value Index and Zillow Observed Rent Index, courtesy of Zillow. Monthly and current, where the Census figures above are a five-year average and are capped at $2,000,000.

Typical home value$350,945as of 2026-07
Typical home value, 1 yearup 4.3%
Typical home value, 5 yearsup 24.9%
Typical home value, 10 yearsup 89.2%
Typical home value since 2000
200020132026$350,945$118,515

$118,515 in 2000 to $350,945 in 2026.

Work, commuting and education

American Community Survey 2019–2023 five-year estimates

Unemployment rate2.3%
Bachelor's degree or higher32.8%
High school diploma or higher97.4%
Works from home13.8%
Drives to work alone77%
Takes public transport0%
Commutes 45 minutes or more16.9%
Health

CDC PLACES 2025 release, model-based estimates. These are modelled small-area estimates for adults, not counts of diagnosed cases.

Obesity36% 2.6 pts above the national average of 33.4%
Diagnosed diabetes10.9% 1.1 pts below the national average of 12%
Currently smokes12.7% 0.5 pts below the national average of 13.2%
High blood pressure36.3% 2.2 pts above the national average of 34.1%
Fair or poor general health16.9% 3.4 pts below the national average of 20.3%
No health insurance (18–64)5% 6.3 pts below the national average of 11.3%
Depression26.6% 4.7 pts above the national average of 21.9%
No leisure-time physical activity22.1% 3.3 pts below the national average of 25.4%
Arthritis31.4% 6.3 pts above the national average of 25.1%
Binge drinking17% 1 pts above the national average of 16%
Taking blood pressure medication76.7% 2 pts above the national average of 74.7%
Cancer (non-skin)10.2% 2.5 pts above the national average of 7.7%
Current asthma11.2% 0.8 pts above the national average of 10.4%
Coronary heart disease6.6% same as the national average of 6.2%
Routine check-up in past year79.1% 2.4 pts above the national average of 76.7%
Cholesterol screening89.2% 3.3 pts above the national average of 85.9%
Cognitive disability12.7% 2.1 pts below the national average of 14.8%
Colorectal screening74.2% 9.9 pts above the national average of 64.3%
COPD7.2% 0.6 pts above the national average of 6.6%
Visited a dentist73.9% 12.6 pts above the national average of 61.3%
Any disability29.7% 1 pts below the national average of 30.7%
Lacks emotional support20.7% 4.1 pts below the national average of 24.8%
Food insecurity9.6% 7.5 pts below the national average of 17.1%
Received food stamps8.4% 5.9 pts below the national average of 14.3%
Hearing disability7.1% same as the national average of 6.7%
High cholesterol35.9% same as the national average of 36.2%
Housing insecurity8.2% 5.6 pts below the national average of 13.8%
Independent living disability7% 1.4 pts below the national average of 8.4%
Lacks transport5.7% 3.5 pts below the national average of 9.2%
Loneliness29.9% 4.5 pts below the national average of 34.4%
Mammography use78.7% 2.8 pts above the national average of 75.9%
Poor mental health (14+ days)16.6% same as the national average of 16.8%
Mobility disability12.9% 1.1 pts below the national average of 14%
Poor physical health (14+ days)13.2% same as the national average of 13.5%
Self-care disability3% 1 pts below the national average of 4%
Utility shut-off threat5.9% 2.9 pts below the national average of 8.8%
Sleeps under 7 hours36.1% same as the national average of 36.4%
Stroke3.2% same as the national average of 3.4%
All natural teeth lost8.4% 4.6 pts below the national average of 13%
Vision disability3.7% 1.9 pts below the national average of 5.6%
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Business and employment

Census ZIP Code Business Patterns 2022

Business establishments122
People employed1,367
Annual payroll$129,814,000
Natural hazard risk

FEMA National Risk Index, estimated for this ZIP code from census tract data — the NRI is not published per ZIP.

Overall riskHigher than 29.8% of US census tracts
FEMA ratingVery Low to Relatively Low across the 8 census tracts this ZIP code covers
Expected annual loss42.9 out of 100
Community resilience87.7 out of 100

By hazard

Score is out of 100 and is the area-weighted average across the census tracts this ZIP code covers. The rating beside it is the highest any one of those tracts carries.

Landslide86.9Relatively Low at its worst in this ZIP code
Strong wind77.7Relatively High at its worst in this ZIP code
Tornado77.2Relatively High at its worst in this ZIP code
Hail76.7Relatively Moderate at its worst in this ZIP code
Ice storm64.5Relatively Moderate at its worst in this ZIP code
Wildfire63.1Very Low at its worst in this ZIP code
Cold wave61.4Relatively Moderate at its worst in this ZIP code
Winter weather52.5Relatively Moderate at its worst in this ZIP code
River flooding40.2Relatively Moderate at its worst in this ZIP code
Lightning37.1Relatively Moderate at its worst in this ZIP code
Hurricane32.9Very Low at its worst in this ZIP code
Earthquake29.3Very Low at its worst in this ZIP code
Heat wave19.8Relatively Low at its worst in this ZIP code
Compared with Michigan and the United States

State and national columns are figures for those areas, not for this ZIP code. American Community Survey 2019–2023 five-year estimates

This ZIPMichiganUnited States
Median household income$95,307$71,149$78,538
Income per person$47,223$39,538$43,289
Poverty rate4.2%13.1%12.4%
Median home value$272,300$217,600$303,400
Median gross rent$1,178$1,084$1,348
Homeownership93.7%72.9%65%
Bachelor's degree or higher32.8%31.8%35%
Unemployment rate2.3%5.8%5.2%
Works from home13.8%12%13.5%
Born outside the US1.8%7%13.9%
Median age45.640.138.7
Climate

NOAA US Climate Normals 1991-2020, from the nearest weather station with a full year of records. The station and its distance are named above, because a station forty kilometres away describes somewhere else.

Weather stationCHELSEA, MI US16.1 km away
Rain in a year35 in
Snow in a year33 in

Average high and low by month

January30.6°F / 16.4°F2.41 in rain, 10.9 in snow
February34°F / 17.4°F1.98 in rain, 8.6 in snow
March44.3°F / 25.4°F2.24 in rain, 4.7 in snow
April57.5°F / 36.6°F3.01 in rain, 0.9 in snow
May69.5°F / 47.6°F3.83 in rain
June78.8°F / 56.5°F3.64 in rain
July82.3°F / 60.6°F3.45 in rain
August80.4°F / 58.9°F3.56 in rain
September74.1°F / 51°F2.74 in rain
October61°F / 40.2°F3.14 in rain
November47.2°F / 30.8°F2.61 in rain, 1.8 in snow
December35.9°F / 22.6°F2.08 in rain, 6 in snow
Access to food

USDA Food Access Research Atlas, estimated for this ZIP code from census tract data. Each figure is the share of the ZIP code's land area that falls in a tract carrying that flag.

Low income and far from a supermarketNone of this ZIP code
Far from a supermarket3% of this ZIP code's area
No vehicle and far from a supermarket3% of this ZIP code's area
School districts

NCES Geographic Relationship File 2025, which states the association between each district and each ZIP code tabulation area directly. Elementary and secondary districts can cover the same ground, so shares need not total 100%.

This ZIP code is served by 6 school districts, so the address decides which one, not the ZIP code.

Grass Lake Community Schools51.4% of this ZIP code's land area
Chelsea School District15.5% of this ZIP code's land area
East Jackson Community Schools9.7% of this ZIP code's land area
Napoleon Community Schools9% of this ZIP code's land area
Manchester Community Schools8.4% of this ZIP code's land area
Stockbridge Community Schools5.9% of this ZIP code's land area
Community and walkability

CDC/ATSDR Social Vulnerability Index 2022 and the EPA National Walkability Index, both estimated for this ZIP code from census tract data. Vulnerability figures are national percentile ranks, not measurements.

Overall social vulnerability15more vulnerable than 15% of US census tracts
Socioeconomic status22more vulnerable than 22% of US census tracts
Household characteristics28more vulnerable than 28% of US census tracts
Racial and ethnic minority status10more vulnerable than 10% of US census tracts
Housing type and transport20more vulnerable than 20% of US census tracts
Walkability4.5 out of 20Least walkable
Nearby ZIP codes

The closest ZIP codes by centre point, which is not the same as sharing a border.

49254 Michigan Center, MI11.2 km away
49259 Munith, MI11.9 km away
49263 Norvell, MI12.6 km away
49261 Napoleon, MI12.6 km away
48118 Chelsea, MI14.3 km away
49201 Jackson, MI16 km away
49204 Jackson, MI17.3 km away
49202 Jackson, MI17.7 km away
Location, counties and time zone

County shares from Census 2020 ZCTA relationship files. Time zone from the USDOT National Transportation Atlas, which renders the boundaries written into 49 CFR Part 71.

Jackson County84.7% of this ZIP code's land area
Washtenaw County15.3% of this ZIP code's land area
Time zoneEastern (UTC-05:00 standard)
Daylight saving timeObserved
Land area104.1 sq mi
Water area3.61 sq mi
Population density88 people per sq mi
Latitude, longitude42.2711, -84.1940

Figures are published for this ZIP code or its Census tabulation area unless a section says otherwise. Estimates whose margin of error made them unreliable are omitted rather than shown. Sources: US Census Bureau, CDC, IRS.

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