49240 ZIP Code — Grass Lake, MI

Jackson County, Michigan

ZIP code 49240 is located in Grass Lake, Michigan, within Jackson County. It covers approximately 104.10 square miles and serves a population of 9,379 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 517.

About ZIP code 49240

The housing stock consists of predominantly single-family detached homes. Most homes were built in the 2000s, giving the area an established character. Median home value is $258,100. Owner-occupancy is high at 94%, well above the national average.

Median household income is $92,097. The poverty rate of 4% is below the national average. 37% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 27 minutes is near the national average.

Educational attainment is near the national average, with 32% of residents holding a bachelor's degree or higher.

Overall, ZIP code 49240 reflects a community defined by high homeownership and a significant Social Security-dependent population.

9,379

population

104.10

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

49240 ZIP code map

Cities in ZIP code 49240

Below are the cities the US Postal Service accepts for ZIP code 49240. Using any city not on this list may result in mail delivery delays.

City	Status
Grass Lake	Preferred

Nearby ZIP codes

49259 Munith (6.4 mi) 49254 Michigan Center (7.6 mi) 48118 Chelsea (8.7 mi) 49201 Jackson (9.8 mi) 49272 Pleasant Lake (10.5 mi) 49202 Jackson (11.1 mi) 49203 Jackson (11.7 mi) 48158 Manchester (12.4 mi) 49285 Stockbridge (12.9 mi) 49230 Brooklyn (13.6 mi) 48137 Gregory (14.2 mi) 49234 Clarklake (14.6 mi)

Demographics updated 06/2026

Population
Total population	9,379
Population density	90 / sq mi
State FIPS	26
County FIPS	075

Geography
Land area	104.10 sq mi
Water area	3.61 sq mi
Latitude	42.2899
Longitude	-84.1914
Timezone	Eastern (ET)
Area code	517

Total population by age

Gender

Race & ethnicity

Economics updated 06/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	25.7%	45.6%	42.6%
$50k – $100k	38.3%	33.2%	31.1%
$100k – $200k	32.2%	17.9%	20.6%
Over $200k	3.8%	3.3%	5.7%

Demographics & statistics

9,379

Population

People per sq mi

44.4

Median age

$92,097

Median household income

$42,520

Per capita income

$258,100

Median home value

$1,182

Median monthly rent

93.8%

Home ownership

3.7%

Poverty rate

2.3%

Unemployment

3,638

Housing units

32.2%

Bachelor's or higher

Age distribution

Male Female

280

Under 5

249

221

5–9

197

375

10–14

332

283

15–19

252

181

20–24

160

536

25–34

476

681

35–44

605

708

45–54

629

354

55–59

314

385

60–64

342

552

65–74

489

346

75–84

307

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	1,970	21.0%
18 and over	7,409	79.0%
65 and over	1,819	19.4%
Median age	44.4 years

Race & ethnicity

White 92.8%

Two or more races 4%

Hispanic or Latino 2.5%

Asian 0.5%

Black or African American 0.1%

Other race 0.1%

American Indian / Alaska Native 0.1%

Group	Count	%
White	8,923	92.8%
Two or more races	383	4%
Hispanic or Latino	240	2.5%
Asian	50	0.5%
Black or African American	9	0.1%
Other race	8	0.1%
American Indian / Alaska Native	6	0.1%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	25.7%	45.6%	42.6%
$50k – $100k	38.3%	33.2%	31.1%
$100k – $200k	32.2%	17.9%	20.6%
Over $200k	3.8%	3.3%	5.7%

Under $10k 0.8%

$10k–$15k 2.5%

$15k–$25k 2.8%

$25k–$35k 3.3%

$35k–$50k 8.9%

$50k–$75k 20.1%

$75k–$100k 17.6%

$100k–$150k 24.6%

$150k–$200k 12.1%

$200k+ 7.4%

Range	% of households
Under $10k	0.8%
$10k–$15k	2.5%
$15k–$25k	2.8%
$25k–$35k	3.3%
$35k–$50k	8.9%
$50k–$75k	20.1%
$75k–$100k	17.6%
$100k–$150k	24.6%
$150k–$200k	12.1%
$200k+	7.4%
Median income	$92,097

Housing

Home values

Under $50k 2.7%

$50k–$100k 4.2%

$100k–$150k 8.2%

$150k–$200k 14.5%

$200k–$300k 38.6%

$300k–$500k 23.8%

$500k–$1M 7.8%

$1M+ 0.1%

Housing overview

Metric	Value
Median home value	$258,100
Median rent / month	$1,182
Owner occupied	93.8%
Renter occupied	6.2%
Vacant	5.3%
Single-family detached	92.3%
Large apartment buildings	0.0%
Mobile homes	2.9%
Median rooms	6.3
Avg household size (owned)	2.59

Year built

Era	%
2020 or later	0.0%
2010–2019	4.7%
2000–2009	19.8%
1990–1999	18.7%
1980–1989	7.3%
1970–1979	11.8%
1960–1969	6.4%
1950–1959	9.6%
1940–1949	7.3%
1939 or earlier	14.4%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	3.6%
2 bedrooms	13.0%
3 bedrooms	61.8%
4 bedrooms	16.3%
5+ bedrooms	5.3%

Vehicles per household

Vehicles	% of households
No vehicle	0.6%
1 vehicle	20.7%
2 vehicles	49.2%
3 or more	29.5%

Heating fuel

Fuel type	%
Utility gas	54.2%
Electricity	7.4%
Propane / LP gas	31.9%
Fuel oil	1.7%
Wood	4.0%
No fuel used	0.2%

Households & families

Household type	Count	%
Married-couple family	2,350	64.2%
Cohabiting couple	252	6.9%
Male householder, no spouse	514	14.0%
Female householder, no spouse	547	14.9%
Households with children under 18	981	26.8%
Households with seniors (65+)	1,325	36.2%
Average household size	2.56

Marital status

Status	Male	Female
Never married	26.6%	14.1%
Married	62.6%	66.1%
Separated	0.5%	0.2%
Widowed	2.9%	6.3%
Divorced	7.4%	13.3%

Education

Less than 9th grade 0.5%

Some HS, no diploma 2.7%

HS graduate 28.3%

Some college, no degree 23.9%

Associate's degree 12.5%

Bachelor's degree 20.7%

Graduate / professional 11.5%

Metric	%
HS diploma or higher	96.8%
Bachelor's or higher	32.2%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	64	3.1%
Kindergarten	76	3.7%
Elementary school	941	45.3%
High school	468	22.5%
College / grad school	528	25.4%

Employment

Industry of employment

Education & healthcare 32.1%

Manufacturing 15.3%

Professional & management 9.3%

Retail trade 8.8%

Arts, food & hospitality 8.8%

Other services 6.3%

Construction 6.2%

Finance & real estate 5.3%

Transportation & utilities 2.9%

Public administration 2.3%

Information 1.3%

Wholesale trade 1.0%

Agriculture & mining 0.3%

Occupation

Category	%
Management, business & arts	44.8%
Service	17.5%
Sales & office	19.5%
Natural resources & construction	8.2%
Production & transportation	10.0%

Employment type

Type	%
Private sector	83.7%
Government	12.5%
Self-employed	3.5%
Unpaid family workers	0.2%

Commute

Method	%
Drive alone	79.9%
Carpool	7.0%
Public transit	0.0%
Walk	1.7%
Work from home	10.2%
Other means	1.2%
Avg commute (minutes)	26.6

Poverty

All people 3.7%

Under 18 years 1.2%

18 and over 4.3%

Married-couple families 1.1%

Female-led households 8.2%

Income support

Source	% of households
Social Security	37.4%
Retirement income	31.0%
Supplemental Security	3.8%
Cash public assistance	0.2%
Food stamps / SNAP	2.6%

Health indicators

Condition	%
Obesity	35.7%
High blood pressure	29.9%
High cholesterol	34.1%
Diabetes	9.1%
Heart disease	5.6%
Stroke	2.5%
Asthma	10.8%
Arthritis	27.3%
Kidney disease	2.4%
Pulmonary disease	6.2%
Cancer	6.8%

Behavior / access	%
Smoking	16.6%
Binge drinking	20.5%
No physical activity	15.8%
Less than 7 hrs sleep	33.6%
Depression	21.5%
Fair or poor health	11.0%
Poor mental health	14.9%
Poor physical health	9.0%
No health insurance	7.3%
Visited doctor (checkup)	73.5%
Visited dentist	73.9%
Cholesterol screening	92.7%
Teeth loss	8.8%

Veterans & disability

Veterans	Count	%
Civilian veterans	663	9.0%

Disability	%
Any disability	10.0%
Under 18	1.3%
18–64 years	6.2%
65 and over	30.8%

Health insurance coverage

Type	%
Private insurance	87.5%
Public insurance	29.2%
No insurance	2.8%
Uninsured under 19	3.2%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	8,850	94.4%
Spanish	90	1.0%
Other Indo-European	54	0.6%
Asian & Pacific Islander	35	0.4%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	9,216	98.3%
Born in same state	9,149	97.5%
Born in different state	7,486	79.8%
Foreign born	67	0.7%
Naturalized citizen	163	1.7%
Not a US citizen	99	60.7%

Ancestry

Ancestry	Count	%
French	2,297	24.5%
Italian	1,237	13.2%
Arab	599	6.4%
Irish	271	2.9%
English	249	2.7%

Ancestry	Count	%
German	208	2.2%
Dutch	32	0.3%
Polish	23	0.2%
Norwegian	17	0.2%

Technology access

Metric	% of households
Computer access	39.1%
Internet access	94.2%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions about ZIP code 49240

What city is ZIP code 49240 in?

ZIP code 49240 is primarily assigned to Grass Lake, Michigan.

What county is ZIP code 49240 in?

ZIP code 49240 falls within Jackson County, Michigan.

Is ZIP code 49240 mostly owner-occupied?

94% of occupied units in ZIP code 49240 are owner-occupied, well above the national average.

Does ZIP code 49240 have a large retiree population?

37% of households in ZIP code 49240 receive Social Security income, suggesting a significant retiree or disability population.

What is the population of ZIP code 49240?

ZIP code 49240 has an estimated population of 9,379 residents, with a density of 90 people per square mile.

What is the median household income in ZIP code 49240?

The median household income in ZIP code 49240 is $92,097, above the national median of ~$75,000.

What timezone is ZIP code 49240 in?

ZIP code 49240 observes the EST timezone.