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Iowa ZIP Codes
Howard County
Elma, IA
50628
50628 ZIP Code — Elma, IA
Howard County, Iowa
ZIP code 50628 is located in
Elma ,
Iowa ,
within Howard County .
It covers approximately 113.38 square miles and serves a population of
1,183 residents.
This is a standard ZIP code in the Central (CT) timezone,
served by area code 641 .
About ZIP code 50628
The housing stock consists of predominantly single-family detached homes. Most homes were built in the pre-1940, giving the area an established character. Median home value is $137,500. Owner-occupancy is high at 79%, well above the national average.
Median household income is $57,353. 43% of households receive Social Security income, suggesting a notable retiree or disability population.
The dominant occupation class is management, business, and professional, with agriculture and mining as the leading industry. The average commute of 25 minutes is near the national average.
College attainment at 14% is below the national average, consistent with a trades and production-oriented local economy.
Overall, ZIP code 50628 reflects a community defined by a trades-oriented workforce, high homeownership, and a significant Social Security-dependent population.
50628 ZIP code map
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Cities in ZIP code 50628
Below are the cities the US Postal Service accepts for ZIP code 50628. Using any city not on this list may result in mail delivery delays.
City
Status
Elma
Acceptable
Elma
Preferred
Nearby ZIP codes
Demographics
updated 05/2026
Population
Total population
1,183
Population density
10 / sq mi
State FIPS
19
County FIPS
089
Geography
Land area
113.38 sq mi
Water area
0.07 sq mi
Latitude
43.3208
Longitude
-92.3965
Timezone
Central (CT)
Area code
641
Economics
updated 05/2026
Household income
Income range
This ZIP
County avg
State avg
Under $50k
45.6%
43.3%
40.1%
$50k – $100k
38.0%
37.4%
33.4%
$100k – $200k
14.5%
17.1%
21.5%
Over $200k
1.9%
2.2%
5.0%
Demographics & statistics
$57,353
Median household income
$137,500
Median home value
14.3%
Bachelor's or higher
Age distribution
Age summary
Group Count %
Under 18 229 19.4%
18 and over 954 80.6%
65 and over 347 29.3%
Median age 49.1 years
Race & ethnicity
Group Count %
White 1,156 96.7%
Two or more races 27 2.3%
Hispanic or Latino 13 1.1%
Household income
Income range
This ZIP
County avg
State avg
Under $50k
45.6%
43.3%
40.1%
$50k – $100k
38.0%
37.4%
33.4%
$100k – $200k
14.5%
17.1%
21.5%
Over $200k
1.9%
2.2%
5.0%
Range % of households
Under $10k 1.7%
$10k–$15k 5.4%
$15k–$25k 18.3%
$25k–$35k 6.0%
$35k–$50k 11.6%
$50k–$75k 25.3%
$75k–$100k 11.8%
$100k–$150k 10.4%
$150k–$200k 1.9%
$200k+ 7.5%
Median income $57,353
Housing
Housing overview
Metric Value
Median home value $137,500
Median rent / month $549
Owner occupied 79.2%
Renter occupied 20.8%
Vacant 6.0%
Single-family detached 88.6%
Large apartment buildings 0.0%
Mobile homes 3.1%
Median rooms 6.4
Avg household size (owned) 2.23
Year built
Era %
2020 or later 0.0%
2010–2019 8.7%
2000–2009 10.9%
1990–1999 5.3%
1980–1989 4.5%
1970–1979 10.9%
1960–1969 2.9%
1950–1959 1.5%
1940–1949 12.3%
1939 or earlier 43.0%
Bedrooms
Size % of units
No bedroom (studio) 0.0%
1 bedroom 6.4%
2 bedrooms 22.1%
3 bedrooms 42.8%
4 bedrooms 22.9%
5+ bedrooms 5.8%
Vehicles per household
Vehicles % of households
No vehicle 5.6%
1 vehicle 27.0%
2 vehicles 33.2%
3 or more 34.2%
Heating fuel
Fuel type %
Utility gas 4.1%
Electricity 8.7%
Propane / LP gas 72.2%
Fuel oil 12.7%
Wood 2.3%
Households & families
Household type Count %
Married-couple family 257 49.6%
Cohabiting couple 47 9.1%
Male householder, no spouse 55 10.6%
Female householder, no spouse 159 30.7%
Households with children under 18 129 24.9%
Households with seniors (65+) 228 44.0%
Average household size 2.21
Marital status
Status Male Female
Never married 33.0% 18.5%
Married 55.8% 51.0%
Separated 0.2% 1.6%
Widowed 3.4% 19.4%
Divorced 7.7% 9.5%
Education
Some college, no degree
15.6%
Graduate / professional
1.0%
Metric %
HS diploma or higher 91.7%
Bachelor's or higher 14.3%
School enrollment (ages 3–17)
Type Count %
Nursery / preschool 7 3.2%
Kindergarten 11 5.0%
Elementary school 92 42.2%
High school 75 34.4%
College / grad school 33 15.1%
Employment
Industry of employment
Agriculture & mining
21.3%
Education & healthcare
20.4%
Transportation & utilities
12.3%
Finance & real estate
4.0%
Arts, food & hospitality
2.5%
Professional & management
1.6%
Public administration
1.2%
Occupation
Category %
Management, business & arts 32.0%
Service 16.2%
Sales & office 19.2%
Natural resources & construction 13.9%
Production & transportation 18.8%
Employment type
Type %
Private sector 66.3%
Government 15.3%
Self-employed 18.5%
Unpaid family workers 0.0%
Commute
Method %
Drive alone 74.9%
Carpool 6.6%
Public transit 0.0%
Walk 1.5%
Work from home 17.1%
Other means 0.0%
Avg commute (minutes) 25.4
Poverty
Married-couple families
1.9%
Female-led households
63.8%
Income support
Source % of households
Social Security 42.7%
Retirement income 19.1%
Supplemental Security 4.4%
Cash public assistance 1.2%
Food stamps / SNAP 10.6%
Health indicators
Condition %
Obesity 40.4%
High blood pressure 38.1%
High cholesterol 36.9%
Diabetes 12.1%
Heart disease 8.8%
Stroke 4.0%
Asthma 9.3%
Arthritis 30.1%
Kidney disease 3.6%
Pulmonary disease 8.7%
Cancer 8.7%
Behavior / access %
Smoking 18.7%
Binge drinking 19.1%
No physical activity 27.3%
Less than 7 hrs sleep 30.8%
Depression 17.0%
Fair or poor health 15.6%
Poor mental health 13.2%
Poor physical health 11.4%
No health insurance 10.2%
Visited doctor (checkup) 76.5%
Visited dentist 61.9%
Cholesterol screening 89.3%
Teeth loss 14.8%
Veterans & disability
Veterans Count %
Civilian veterans 93 9.7%
Disability %
Any disability 11.7%
Under 18 6.1%
18–64 years 5.9%
65 and over 27.1%
Health insurance coverage
Type %
Private insurance 65.7%
Public insurance 45.6%
No insurance 13.6%
Uninsured under 19 28.4%
Language & origin
Language spoken at home (age 5+)
Language Count %
English only 1,126 95.2%
Spanish 47 4.2%
Other Indo-European 7 0.6%
Asian & Pacific Islander 40 3.6%
Other languages 0 0.0%
Place of birth & citizenship
Origin Count %
Native born (US) 1,167 98.6%
Born in same state 1,160 98.1%
Born in different state 939 79.4%
Foreign born 7 0.6%
Naturalized citizen 16 1.4%
Not a US citizen 0 0.0%
Ancestry
Ancestry Count %
Italian 176 14.9%
Polish 100 8.5%
Arab 67 5.7%
Ancestry Count %
French 64 5.4%
Dutch 14 1.2%
English 8 0.7%
Technology access
Metric % of households
Computer access 43.8%
Internet access 82.4%
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 50628
What city is ZIP code 50628 in?
ZIP code 50628 is primarily assigned to Elma, Iowa.
What county is ZIP code 50628 in?
ZIP code 50628 falls within Howard County, Iowa.
Does ZIP code 50628 have an older population?
29% of residents in ZIP code 50628 are 65 or older, above the national average of ~17%.
How educated is the population of ZIP code 50628?
14% 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 50628 have a large retiree population?
43% of households in ZIP code 50628 receive Social Security income, suggesting a significant retiree or disability population.
What is the typical home value in ZIP code 50628?
The median home value in ZIP code 50628 is $137,500.
What timezone is ZIP code 50628 in?
ZIP code 50628 observes the CST timezone.
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