48421 ZIP Code — Columbiaville, MI

Lapeer County, Michigan

ZIP code 48421 is located in Columbiaville, Michigan, within Lapeer County. It covers approximately 41.46 square miles and serves a population of 6,592 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 810.

About ZIP code 48421

The housing stock consists of predominantly single-family detached homes. Most homes were built in the 1970s, giving the area an established character. Median home value is $186,900. Owner-occupancy is high at 93%, well above the national average.

Median household income is $68,578. The poverty rate of 7% is below the national average. 49% 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. An above-average commute of 38 minutes suggests many residents work outside the immediate area.

College attainment at 18% is below the national average, consistent with a trades and production-oriented local economy.

Health indicators show elevated rates of smoking (21%) compared to national benchmarks.

Overall, ZIP code 48421 reflects a community defined by a trades-oriented workforce, high homeownership, and a significant Social Security-dependent population.

6,592

population

41.46

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

48421 ZIP code map

Cities in ZIP code 48421

Below are the cities the US Postal Service accepts for ZIP code 48421. Using any city not on this list may result in mail delivery delays.

City	Status
Columbiaville	Preferred

Nearby ZIP codes

48464 Otter Lake (4.6 mi) 48435 Fostoria (6.4 mi) 48446 Lapeer (7 mi) 48463 Otisville (7.5 mi) 48461 North Branch (9.2 mi) 48423 Davison (10.2 mi) 48760 Silverwood (11.9 mi) 48412 Attica (12.4 mi) 48746 Millington (12.5 mi) 48506 Flint (13.4 mi) 48509 Burton (14 mi) 48744 Mayville (14.1 mi)

Demographics updated 06/2026

Population
Total population	6,592
Population density	159 / sq mi
State FIPS	26
County FIPS	087

Geography
Land area	41.46 sq mi
Water area	3.08 sq mi
Latitude	43.1482
Longitude	-83.3830
Timezone	Eastern (ET)
Area code	810

Total population by age

Gender

Race & ethnicity

Economics updated 06/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	32.0%	37.7%	42.6%
$50k – $100k	50.0%	36.9%	31.1%
$100k – $200k	16.9%	21.6%	20.6%
Over $200k	1.1%	3.8%	5.7%

Demographics & statistics

6,592

Population

159

People per sq mi

48.2

Median age

$68,578

Median household income

$32,981

Per capita income

$186,900

Median home value

$845

Median monthly rent

92.5%

Home ownership

6.6%

Poverty rate

10.8%

Unemployment

2,803

Housing units

18.3%

Bachelor's or higher

Age distribution

Male Female

135

Under 5

134

5–9

268

10–14

268

193

15–19

193

148

20–24

147

448

25–34

448

223

35–44

222

488

45–54

487

224

55–59

223

304

60–64

303

473

65–74

473

234

75–84

234

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	1,201	18.2%
18 and over	5,391	81.8%
65 and over	1,541	23.4%
Median age	48.2 years

Race & ethnicity

White 96.6%

Two or more races 2.7%

Hispanic or Latino 0.5%

American Indian / Alaska Native 0.1%

Group	Count	%
White	6,401	96.6%
Two or more races	178	2.7%
Hispanic or Latino	31	0.5%
American Indian / Alaska Native	8	0.1%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	32.0%	37.7%	42.6%
$50k – $100k	50.0%	36.9%	31.1%
$100k – $200k	16.9%	21.6%	20.6%
Over $200k	1.1%	3.8%	5.7%

Under $10k 4.4%

$10k–$15k 1.6%

$15k–$25k 5.6%

$25k–$35k 5.0%

$35k–$50k 9.1%

$50k–$75k 30.5%

$75k–$100k 12.3%

$100k–$150k 22.8%

$150k–$200k 6.4%

$200k+ 2.4%

Range	% of households
Under $10k	4.4%
$10k–$15k	1.6%
$15k–$25k	5.6%
$25k–$35k	5.0%
$35k–$50k	9.1%
$50k–$75k	30.5%
$75k–$100k	12.3%
$100k–$150k	22.8%
$150k–$200k	6.4%
$200k+	2.4%
Median income	$68,578

Housing

Home values

Under $50k 2.9%

$50k–$100k 11.1%

$100k–$150k 18.0%

$150k–$200k 26.4%

$200k–$300k 20.9%

$300k–$500k 16.3%

$500k–$1M 4.5%

Housing overview

Metric	Value
Median home value	$186,900
Median rent / month	$845
Owner occupied	92.5%
Renter occupied	7.5%
Vacant	14.0%
Single-family detached	92.7%
Large apartment buildings	0.4%
Mobile homes	4.0%
Median rooms	6.0
Avg household size (owned)	2.57

Year built

Era	%
2020 or later	0.2%
2010–2019	1.5%
2000–2009	5.8%
1990–1999	15.6%
1980–1989	8.7%
1970–1979	33.8%
1960–1969	6.0%
1950–1959	8.3%
1940–1949	9.9%
1939 or earlier	10.2%

Bedrooms

Size	% of units
No bedroom (studio)	0.2%
1 bedroom	1.6%
2 bedrooms	20.2%
3 bedrooms	59.6%
4 bedrooms	14.6%
5+ bedrooms	3.8%

Vehicles per household

Vehicles	% of households
No vehicle	4.0%
1 vehicle	26.6%
2 vehicles	33.3%
3 or more	36.1%

Heating fuel

Fuel type	%
Utility gas	40.1%
Electricity	7.9%
Propane / LP gas	34.2%
Fuel oil	10.3%
Wood	4.7%
No fuel used	0.3%

Households & families

Household type	Count	%
Married-couple family	1,606	62.3%
Cohabiting couple	182	7.1%
Male householder, no spouse	258	10.0%
Female householder, no spouse	530	20.6%
Households with children under 18	741	28.8%
Households with seniors (65+)	1,035	40.2%
Average household size	2.55

Marital status

Status	Male	Female
Never married	26.1%	18.4%
Married	62.5%	58.1%
Separated	0.9%	1.3%
Widowed	1.6%	10.5%
Divorced	8.9%	11.7%

Education

Less than 9th grade 2.7%

Some HS, no diploma 4.2%

HS graduate 34.4%

Some college, no degree 29.3%

Associate's degree 11.1%

Bachelor's degree 11.9%

Graduate / professional 6.4%

Metric	%
HS diploma or higher	93.2%
Bachelor's or higher	18.3%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	43	3.3%
Kindergarten	33	2.5%
Elementary school	573	43.9%
High school	346	26.5%
College / grad school	311	23.8%

Employment

Industry of employment

Education & healthcare 22.2%

Manufacturing 21.8%

Construction 11.4%

Retail trade 9.2%

Professional & management 7.0%

Arts, food & hospitality 6.1%

Finance & real estate 5.6%

Transportation & utilities 5.1%

Other services 5.1%

Public administration 4.0%

Agriculture & mining 1.3%

Wholesale trade 1.2%

Information 0.1%

Occupation

Category	%
Management, business & arts	30.5%
Service	16.2%
Sales & office	17.4%
Natural resources & construction	15.8%
Production & transportation	20.1%

Employment type

Type	%
Private sector	79.9%
Government	12.0%
Self-employed	6.6%
Unpaid family workers	1.5%

Commute

Method	%
Drive alone	81.8%
Carpool	9.6%
Public transit	0.0%
Walk	0.6%
Work from home	7.9%
Other means	0.2%
Avg commute (minutes)	37.7

Poverty

All people 6.6%

Under 18 years 7.1%

18 and over 6.5%

Married-couple families 3.5%

Female-led households 8.5%

Income support

Source	% of households
Social Security	49.4%
Retirement income	39.4%
Supplemental Security	2.9%
Cash public assistance	0.9%
Food stamps / SNAP	8.8%

Health indicators

Condition	%
Obesity	39.5%
High blood pressure	34.1%
High cholesterol	36.2%
Diabetes	10.8%
Heart disease	6.7%
Stroke	3.0%
Asthma	11.0%
Arthritis	29.5%
Kidney disease	2.9%
Pulmonary disease	8.1%
Cancer	6.8%

Behavior / access	%
Smoking	20.8%
Binge drinking	19.5%
No physical activity	23.0%
Less than 7 hrs sleep	34.2%
Depression	22.6%
Fair or poor health	14.7%
Poor mental health	16.9%
Poor physical health	11.5%
No health insurance	9.3%
Visited doctor (checkup)	73.4%
Visited dentist	69.9%
Cholesterol screening	91.3%
Teeth loss	12.1%

Veterans & disability

Veterans	Count	%
Civilian veterans	468	8.7%

Disability	%
Any disability	16.5%
Under 18	1.7%
18–64 years	11.6%
65 and over	40.1%

Health insurance coverage

Type	%
Private insurance	71.9%
Public insurance	43.8%
No insurance	6.0%
Uninsured under 19	2.5%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	6,323	95.9%
Spanish	10	0.2%
Other Indo-European	3	0.0%
Asian & Pacific Islander	7	0.1%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	6,516	98.8%
Born in same state	6,507	98.7%
Born in different state	5,855	88.8%
Foreign born	9	0.1%
Naturalized citizen	76	1.2%
Not a US citizen	45	59.2%

Ancestry

Ancestry	Count	%
Italian	989	15%
French	971	14.7%
Arab	626	9.5%
Irish	166	2.5%
German	144	2.2%

Ancestry	Count	%
English	109	1.7%
Polish	12	0.2%
Dutch	10	0.2%
Norwegian	6	0.1%

Technology access

Metric	% of households
Computer access	39.1%
Internet access	92.9%

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

Frequently asked questions about ZIP code 48421

What city is ZIP code 48421 in?

ZIP code 48421 is primarily assigned to Columbiaville, Michigan.

What county is ZIP code 48421 in?

ZIP code 48421 falls within Lapeer County, Michigan.

Is ZIP code 48421 mostly owner-occupied?

93% of occupied units in ZIP code 48421 are owner-occupied, well above the national average.

Does ZIP code 48421 have a large retiree population?

49% of households in ZIP code 48421 receive Social Security income, suggesting a significant retiree or disability population.

What is the typical home value in ZIP code 48421?

The median home value in ZIP code 48421 is $186,900.

What is the population of ZIP code 48421?

ZIP code 48421 has an estimated population of 6,592 residents, with a density of 159 people per square mile.

What timezone is ZIP code 48421 in?

ZIP code 48421 observes the EST timezone.