50057 ZIP Code — Columbia, IA

Marion County, Iowa

ZIP code 50057 is located in Columbia, Iowa, within Marion County. It covers approximately 18.56 square miles and serves a population of 244 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 641.

About ZIP code 50057

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 $209,200.

The dominant occupation class is management, business, and professional, with manufacturing as the leading industry. The average commute of 21 minutes is near the national average.

College attainment at 13% is below the national average, consistent with a trades and production-oriented local economy.

Health indicators show elevated rates of smoking (20%) compared to national benchmarks.

Notable community characteristics include a notable veteran presence at 16% of civilians, above the national average of 7%.

Overall, ZIP code 50057 reflects a community defined by a trades-oriented workforce, a strong veteran community, and high homeownership.

244

population

18.56

sq mi land

Standard

ZIP type

Central (CT)

timezone

50057 ZIP code map

Cities in ZIP code 50057

Below are the cities the US Postal Service accepts for ZIP code 50057. Using any city not on this list may result in mail delivery delays.

City	Status
Columbia	Acceptable

Demographics updated 05/2026

Population
Total population	244
Population density	13 / sq mi
State FIPS	19
County FIPS	125

Geography
Land area	18.56 sq mi
Water area	0.01 sq mi
Latitude	41.1859
Longitude	-93.1661
Timezone	Central (CT)
Area code	641

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	54.1%	36.8%	40.1%
$50k – $100k	38.3%	35.2%	33.4%
$100k – $200k	7.5%	22.5%	21.5%
Over $200k	0.0%	5.5%	5.0%

Demographics & statistics

244

Population

People per sq mi

54.6

Median age

Median household income

$34,113

Per capita income

$209,200

Median home value

Median monthly rent

100.0%

Home ownership

11.1%

Poverty rate

0.0%

Unemployment

146

Housing units

13.2%

Bachelor's or higher

Age distribution

Male Female

5–9

10–14

15–19

20–24

35–44

45–54

55–59

60–64

65–74

← Male

Female →

Age summary

Group	Count	%
Under 18	37	15.2%
18 and over	207	84.8%
65 and over	4	1.6%
Median age	54.6 years

Race & ethnicity

White 100%

Group	Count	%
White	244	100%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	54.1%	36.8%	40.1%
$50k – $100k	38.3%	35.2%	33.4%
$100k – $200k	7.5%	22.5%	21.5%
Over $200k	0.0%	5.5%	5.0%

Under $10k 16.7%

$10k–$15k 5.8%

$15k–$25k 29.2%

$25k–$35k 2.5%

$50k–$75k 8.3%

$75k–$100k 3.3%

$100k–$150k 34.2%

Range	% of households
Under $10k	16.7%
$10k–$15k	5.8%
$15k–$25k	29.2%
$25k–$35k	2.5%
$50k–$75k	8.3%
$75k–$100k	3.3%
$100k–$150k	34.2%
Median income	$0

Housing

Home values

Under $50k 10.8%

$150k–$200k 29.2%

$200k–$300k 54.2%

$300k–$500k 5.8%

Housing overview

Metric	Value
Median home value	$209,200
Median rent / month	$0
Owner occupied	100.0%
Renter occupied	0.0%
Vacant	17.8%
Single-family detached	95.2%
Large apartment buildings	0.0%
Mobile homes	4.8%
Median rooms	5.0
Avg household size (owned)	2.03

Year built

Era	%
2020 or later	0.0%
2010–2019	13.7%
2000–2009	10.3%
1990–1999	9.6%
1980–1989	0.0%
1970–1979	42.5%
1960–1969	2.1%
1950–1959	0.0%
1940–1949	0.0%
1939 or earlier	21.9%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	0.0%
2 bedrooms	67.1%
3 bedrooms	26.0%
4 bedrooms	2.7%
5+ bedrooms	4.1%

Vehicles per household

Vehicles	% of households
No vehicle	0.0%
1 vehicle	5.8%
2 vehicles	25.0%
3 or more	69.2%

Heating fuel

Fuel type	%
Electricity	39.2%
Propane / LP gas	60.8%

Households & families

Household type	Count	%
Married-couple family	54	45.0%
Cohabiting couple	0	0.0%
Male householder, no spouse	62	51.7%
Female householder, no spouse	4	3.3%
Households with children under 18	10	8.3%
Households with seniors (65+)	4	3.3%
Average household size	2.03

Marital status

Status	Male	Female
Never married	29.8%	22.5%
Married	64.9%	72.5%
Separated	0.0%	0.0%
Widowed	0.0%	0.0%
Divorced	5.3%	5.0%

Education

Less than 9th grade 0.0%

Some HS, no diploma 15.9%

HS graduate 28.6%

Some college, no degree 6.9%

Associate's degree 35.4%

Bachelor's degree 13.2%

Graduate / professional 0.0%

Metric	%
HS diploma or higher	84.1%
Bachelor's or higher	13.2%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	0	0.0%
Kindergarten	5	11.4%
Elementary school	28	63.6%
High school	6	13.6%
College / grad school	5	11.4%

Employment

Industry of employment

Manufacturing 22.6%

Other services 21.3%

Agriculture & mining 12.8%

Finance & real estate 12.2%

Transportation & utilities 9.1%

Public administration 9.1%

Retail trade 4.9%

Professional & management 4.9%

Construction 3.0%

Occupation

Category	%
Management, business & arts	39.6%
Service	0.0%
Sales & office	13.4%
Natural resources & construction	31.7%
Production & transportation	15.2%

Employment type

Type	%
Private sector	75.0%
Government	9.1%
Self-employed	15.9%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	75.5%
Carpool	20.8%
Public transit	0.0%
Walk	0.0%
Work from home	3.8%
Other means	0.0%
Avg commute (minutes)	21.2

Poverty

All people 11.1%

Under 18 years 0.0%

18 and over 13.0%

Married-couple families 0.0%

Female-led households 0.0%

Income support

Source	% of households
Social Security	16.7%
Retirement income	0.0%
Supplemental Security	0.0%
Cash public assistance	0.0%
Food stamps / SNAP	9.2%

Health indicators

Condition	%
Obesity	36.3%
High blood pressure	34.9%
High cholesterol	34.6%
Diabetes	10.5%
Heart disease	7.2%
Stroke	3.3%
Asthma	9.2%
Arthritis	26.7%
Kidney disease	3.0%
Pulmonary disease	7.4%
Cancer	7.1%

Behavior / access	%
Smoking	20.3%
Binge drinking	21.3%
No physical activity	25.5%
Less than 7 hrs sleep	33.2%
Depression	18.0%
Fair or poor health	13.7%
Poor mental health	13.5%
Poor physical health	10.5%
No health insurance	9.4%
Visited doctor (checkup)	75.2%
Visited dentist	68.8%
Cholesterol screening	88.7%
Teeth loss	14.4%

Veterans & disability

Veterans	Count	%
Civilian veterans	34	16.4%

Disability	%
Any disability	4.5%
Under 18	0.0%
18–64 years	3.4%
65 and over	100.0%

Health insurance coverage

Type	%
Private insurance	87.3%
Public insurance	14.3%
No insurance	0.0%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	244	100.0%
Spanish	0	0.0%
Other Indo-European	0	0.0%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	244	100.0%
Born in same state	244	100.0%
Born in different state	175	71.7%
Foreign born	0	0.0%
Naturalized citizen	0	0.0%
Not a US citizen	0	0.0%

Ancestry

Ancestry	Count	%
English	71	29.1%
French	58	23.8%

Ancestry	Count	%
Italian	50	20.5%
Polish	15	6.1%

Technology access

Metric	% of households
Computer access	49.2%
Internet access	100.0%

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

Frequently asked questions about ZIP code 50057

What city is ZIP code 50057 in?

ZIP code 50057 is primarily assigned to Columbia, Iowa.

What county is ZIP code 50057 in?

ZIP code 50057 falls within Marion County, Iowa.

How educated is the population of ZIP code 50057?

13% of residents hold a bachelor's degree or higher — below the national average of ~33%, consistent with a trades-oriented local economy.

Does ZIP code 50057 have a large veteran population?

16% of civilians in ZIP code 50057 are veterans, above the national average of ~7%.

What is the population of ZIP code 50057?

ZIP code 50057 has an estimated population of 244 residents, with a density of 13 people per square mile.

What is the typical home value in ZIP code 50057?

The median home value in ZIP code 50057 is $209,200.

What timezone is ZIP code 50057 in?

ZIP code 50057 observes the CST timezone.