52309 ZIP Code — Monmouth, IA

Jackson County, Iowa

ZIP code 52309 is located in Monmouth, Iowa, within Jackson County. It covers approximately 34.27 square miles and serves a population of 556 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 563.

About ZIP code 52309

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 $138,500. Owner-occupancy is high at 89%, well above the national average.

Median household income is $74,514. 52% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is sales and office, with manufacturing as the leading industry. The average commute of 33 minutes is near the national average.

College attainment at 14% is below the national average, consistent with a trades and production-oriented local economy.

Notable community characteristics include a notable veteran presence at 13% of civilians, above the national average of 7%.

Overall, ZIP code 52309 reflects a community defined by a trades-oriented workforce, a strong veteran community, high homeownership, and a significant Social Security-dependent population.

556
population
34.27
sq mi land
Standard
ZIP type
Central (CT)
timezone
52309 ZIP code map
Cities in ZIP code 52309

Below are the cities the US Postal Service accepts for ZIP code 52309. Using any city not on this list may result in mail delivery delays.

City Status
Monmouth Acceptable
Monmouth Preferred
Nearby ZIP codes
52207 Baldwin (2.7 mi) 52321 Onslow (4.8 mi) 52362 Wyoming (8.3 mi) 52060 Maquoketa (10.3 mi) 52212 Center Junction (10.6 mi) 52323 Oxford Junction (11.2 mi) 52032 Bernard (11.6 mi) 52254 Lost Nation (12 mi) 52033 Cascade (12.8 mi) 52079 Zwingle (13.6 mi) 52320 Olin (15.9 mi) 52037 Delmar (17 mi)
Demographics updated 05/2026
Population
Total population 556
Population density 16 / sq mi
State FIPS 19
County FIPS 097
Geography
Land area 34.27 sq mi
Water area 0.05 sq mi
Latitude 42.1201
Longitude -90.8764
Timezone Central (CT)
Area code 563
Total population by age
Gender
Race & ethnicity
Economics updated 05/2026
Household income
Income range This ZIP County avg State avg
Under $50k 29.4% 41.9% 40.1%
$50k – $100k 35.3% 32.5% 33.4%
$100k – $200k 32.3% 22.0% 21.5%
Over $200k 3.0% 3.6% 5.0%

Demographics & statistics

556
Population
16
People per sq mi
58.3
Median age
$74,514
Median household income
$41,410
Per capita income
$138,500
Median home value
$775
Median monthly rent
88.9%
Home ownership
11.2%
Poverty rate
3.0%
Unemployment
249
Housing units
13.9%
Bachelor's or higher

Age distribution

Male Female
2
Under 5
1
38
5–9
26
10
10–14
6
2
15–19
2
14
20–24
9
13
25–34
9
27
35–44
18
39
45–54
26
49
55–59
33
31
60–64
20
78
65–74
53
24
75–84
16
6
85+
4
← Male
Female →

Age summary

GroupCount%
Under 188715.6%
18 and over46984.4%
65 and over18132.6%
Median age58.3 years

Race & ethnicity

White 97.8%
Asian 2.2%
GroupCount%
White54497.8%
Asian122.2%

Household income

Income range This ZIP County avg State avg
Under $50k 29.4% 41.9% 40.1%
$50k – $100k 35.3% 32.5% 33.4%
$100k – $200k 32.3% 22.0% 21.5%
Over $200k 3.0% 3.6% 5.0%
Under $10k 0.8%
$15k–$25k 26.5%
$25k–$35k 0.4%
$35k–$50k 6.7%
$50k–$75k 17.0%
$75k–$100k 7.9%
$100k–$150k 16.6%
$150k–$200k 19.8%
$200k+ 4.3%
Range% of households
Under $10k0.8%
$15k–$25k26.5%
$25k–$35k0.4%
$35k–$50k6.7%
$50k–$75k17.0%
$75k–$100k7.9%
$100k–$150k16.6%
$150k–$200k19.8%
$200k+4.3%
Median income$74,514

Housing

Home values

Under $50k 9.8%
$50k–$100k 16.9%
$100k–$150k 28.4%
$150k–$200k 11.6%
$200k–$300k 23.6%
$300k–$500k 5.3%
$500k–$1M 4.4%

Housing overview

MetricValue
Median home value$138,500
Median rent / month$775
Owner occupied88.9%
Renter occupied11.1%
Vacant8.7%
Single-family detached87.0%
Large apartment buildings0.0%
Mobile homes12.6%
Median rooms4.9
Avg household size (owned)2.20

Year built

Era%
2020 or later0.0%
2010–20197.6%
2000–20094.7%
1990–19992.5%
1980–198916.2%
1970–19790.4%
1960–196914.8%
1950–195910.8%
1940–19494.3%
1939 or earlier38.6%

Bedrooms

Size% of units
No bedroom (studio)0.0%
1 bedroom26.0%
2 bedrooms27.1%
3 bedrooms32.5%
4 bedrooms12.6%
5+ bedrooms1.8%

Vehicles per household

Vehicles% of households
No vehicle0.0%
1 vehicle13.0%
2 vehicles39.5%
3 or more47.4%

Heating fuel

Fuel type%
Utility gas4.0%
Electricity5.5%
Propane / LP gas55.7%
Fuel oil20.6%
Wood14.2%

Households & families

Household typeCount%
Married-couple family17368.4%
Cohabiting couple218.3%
Male householder, no spouse4919.4%
Female householder, no spouse104.0%
Households with children under 184116.2%
Households with seniors (65+)9738.3%
Average household size2.20

Marital status

StatusMaleFemale
Never married16.5%10.2%
Married64.4%82.0%
Separated0.0%0.0%
Widowed3.0%3.9%
Divorced16.1%3.9%

Education

Less than 9th grade 0.0%
Some HS, no diploma 9.6%
HS graduate 59.9%
Some college, no degree 10.8%
Associate's degree 5.8%
Bachelor's degree 9.0%
Graduate / professional 4.9%
Metric%
HS diploma or higher90.4%
Bachelor's or higher13.9%

School enrollment (ages 3–17)

TypeCount%
Nursery / preschool22.1%
Kindergarten3132.0%
Elementary school4748.5%
High school44.1%
College / grad school1313.4%

Employment

Industry of employment

Manufacturing 26.0%
Education & healthcare 25.1%
Professional & management 12.1%
Information 11.7%
Construction 9.9%
Retail trade 5.4%
Other services 4.9%
Agriculture & mining 2.2%
Arts, food & hospitality 1.8%
Wholesale trade 0.4%
Transportation & utilities 0.4%

Occupation

Category%
Management, business & arts22.0%
Service7.6%
Sales & office26.0%
Natural resources & construction22.0%
Production & transportation22.4%

Employment type

Type%
Private sector82.5%
Government12.6%
Self-employed4.0%
Unpaid family workers0.9%

Commute

Method%
Drive alone91.9%
Carpool8.1%
Public transit0.0%
Walk0.0%
Work from home0.0%
Other means0.0%
Avg commute (minutes)33.1

Poverty

All people 11.2%
Under 18 years 4.6%
18 and over 12.4%
Married-couple families 13.9%
Female-led households 33.3%

Income support

Source% of households
Social Security52.2%
Retirement income13.0%
Supplemental Security16.6%
Cash public assistance0.0%
Food stamps / SNAP2.8%

Health indicators

Condition%
Obesity37.4%
High blood pressure34.0%
High cholesterol33.6%
Diabetes10.5%
Heart disease6.9%
Stroke3.1%
Asthma9.2%
Arthritis25.2%
Kidney disease2.9%
Pulmonary disease7.1%
Cancer7.1%
Behavior / access%
Smoking18.2%
Binge drinking21.8%
No physical activity24.3%
Less than 7 hrs sleep30.1%
Depression17.0%
Fair or poor health13.1%
Poor mental health13.0%
Poor physical health10.0%
No health insurance9.4%
Visited doctor (checkup)75.0%
Visited dentist66.6%
Cholesterol screening89.1%
Teeth loss14.2%

Veterans & disability

VeteransCount%
Civilian veterans6313.4%
Disability%
Any disability8.6%
Under 184.6%
18–64 years7.6%
65 and over12.2%

Health insurance coverage

Type%
Private insurance72.3%
Public insurance44.6%
No insurance5.4%
Uninsured under 190.0%

Language & origin

Language spoken at home (age 5+)

LanguageCount%
English only55399.5%
Spanish61.1%
Other Indo-European00.0%
Asian & Pacific Islander00.0%
Other languages61.1%

Place of birth & citizenship

OriginCount%
Native born (US)54898.6%
Born in same state54898.6%
Born in different state46884.2%
Foreign born00.0%
Naturalized citizen81.4%
Not a US citizen8100.0%

Ancestry

AncestryCount%
Italian264.7%
Arab81.4%
AncestryCount%
Dutch61.1%
French40.7%

Technology access

Metric% of households
Computer access45.5%
Internet access96.8%

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

Frequently asked questions about ZIP code 52309

What city is ZIP code 52309 in?

ZIP code 52309 is primarily assigned to Monmouth, Iowa.

What county is ZIP code 52309 in?

ZIP code 52309 falls within Jackson County, Iowa.

Does ZIP code 52309 have an older population?

33% of residents in ZIP code 52309 are 65 or older, above the national average of ~17%.

Does ZIP code 52309 have a large retiree population?

52% of households in ZIP code 52309 receive Social Security income, suggesting a significant retiree or disability population.

Is ZIP code 52309 mostly owner-occupied?

89% of occupied units in ZIP code 52309 are owner-occupied, well above the national average.

How educated is the population of ZIP code 52309?

14% of residents hold a bachelor's degree or higher — below the national average of ~33%, consistent with a trades-oriented local economy.

What timezone is ZIP code 52309 in?

ZIP code 52309 observes the CST timezone.

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