51235 ZIP Code — Doon, IA

Lyon County, Iowa

ZIP code 51235 is located in Doon, Iowa, within Lyon County. It covers approximately 53.50 square miles and serves a population of 1,012 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 712.

About ZIP code 51235

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 $193,800. Owner-occupancy is high at 81%, well above the national average.

The gap between median ($63,676) and mean household income suggests income inequality — a small number of higher earners pull the average up.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 14 minutes is near the national average. Remote work is prevalent — 22% of workers work from home.

College attainment at 9% is below the national average, consistent with a trades and production-oriented local economy.

Overall, ZIP code 51235 reflects a community defined by a trades-oriented workforce, high homeownership, and a high rate of remote workers.

1,012
population
53.50
sq mi land
Standard
ZIP type
Central (CT)
timezone
51235 ZIP code map
Cities in ZIP code 51235

Below are the cities the US Postal Service accepts for ZIP code 51235. Using any city not on this list may result in mail delivery delays.

City Status
Doon Preferred
Nearby ZIP codes
51230 Alvord (5.6 mi) 51239 Hull (7.9 mi) 51246 Rock Rapids (9.3 mi) 51247 Rock Valley (10 mi) 51240 Inwood (11.4 mi) 51237 George (12.9 mi) 51234 Boyden (13.1 mi) 51241 Larchwood (15.3 mi) 57027 Fairview (15.3 mi) 51250 Sioux Center (15.5 mi) 51243 Little Rock (18 mi) 56138 Hills (18.6 mi)
Demographics updated 05/2026
Population
Total population 1,012
Population density 19 / sq mi
State FIPS 19
County FIPS 119
Geography
Land area 53.50 sq mi
Water area 0.00 sq mi
Latitude 43.2941
Longitude -96.2350
Timezone Central (CT)
Area code 712
Total population by age
Gender
Race & ethnicity
Economics updated 05/2026
Household income
Income range This ZIP County avg State avg
Under $50k 40.9% 35.8% 40.1%
$50k – $100k 36.8% 40.3% 33.4%
$100k – $200k 18.2% 21.9% 21.5%
Over $200k 4.1% 2.0% 5.0%

Demographics & statistics

1,012
Population
19
People per sq mi
29.9
Median age
$63,676
Median household income
$36,219
Per capita income
$193,800
Median home value
$600
Median monthly rent
80.9%
Home ownership
9.6%
Poverty rate
6.2%
Unemployment
280
Housing units
8.7%
Bachelor's or higher

Age distribution

Male Female
70
Under 5
68
67
5–9
65
24
10–14
24
37
15–19
36
10
20–24
10
88
25–34
86
41
35–44
40
51
45–54
50
34
55–59
34
19
60–64
18
25
65–74
24
27
75–84
26
19
85+
19
← Male
Female →

Age summary

GroupCount%
Under 1835334.9%
18 and over65965.1%
65 and over14013.8%
Median age29.9 years

Race & ethnicity

White 96.9%
Hispanic or Latino 1.2%
Other race 1.2%
Two or more races 0.8%
GroupCount%
White99296.9%
Hispanic or Latino121.2%
Other race121.2%
Two or more races80.8%

Household income

Income range This ZIP County avg State avg
Under $50k 40.9% 35.8% 40.1%
$50k – $100k 36.8% 40.3% 33.4%
$100k – $200k 18.2% 21.9% 21.5%
Over $200k 4.1% 2.0% 5.0%
Under $10k 4.3%
$10k–$15k 2.6%
$15k–$25k 5.2%
$25k–$35k 6.1%
$35k–$50k 17.1%
$50k–$75k 26.0%
$75k–$100k 10.7%
$100k–$150k 16.8%
$150k–$200k 0.9%
$200k+ 10.4%
Range% of households
Under $10k4.3%
$10k–$15k2.6%
$15k–$25k5.2%
$25k–$35k6.1%
$35k–$50k17.1%
$50k–$75k26.0%
$75k–$100k10.7%
$100k–$150k16.8%
$150k–$200k0.9%
$200k+10.4%
Median income$63,676

Housing

Home values

Under $50k 5.0%
$50k–$100k 18.9%
$100k–$150k 12.1%
$150k–$200k 15.4%
$200k–$300k 26.8%
$300k–$500k 6.1%
$500k–$1M 15.7%

Housing overview

MetricValue
Median home value$193,800
Median rent / month$600
Owner occupied80.9%
Renter occupied19.1%
Vacant0.0%
Single-family detached96.2%
Large apartment buildings0.0%
Mobile homes1.2%
Median rooms7.5
Avg household size (owned)3.10

Year built

Era%
2020 or later0.6%
2010–201910.4%
2000–20097.2%
1990–199912.4%
1980–19894.6%
1970–197911.3%
1960–19694.9%
1950–195915.0%
1940–19492.6%
1939 or earlier30.9%

Bedrooms

Size% of units
No bedroom (studio)0.0%
1 bedroom8.7%
2 bedrooms15.0%
3 bedrooms39.3%
4 bedrooms33.5%
5+ bedrooms3.5%

Vehicles per household

Vehicles% of households
No vehicle1.4%
1 vehicle23.4%
2 vehicles39.0%
3 or more36.1%

Heating fuel

Fuel type%
Utility gas50.6%
Electricity34.7%
Propane / LP gas13.3%
Fuel oil0.6%
Wood0.9%

Households & families

Household typeCount%
Married-couple family20860.1%
Cohabiting couple277.8%
Male householder, no spouse7521.7%
Female householder, no spouse3610.4%
Households with children under 1811132.1%
Households with seniors (65+)9828.3%
Average household size2.92

Marital status

StatusMaleFemale
Never married24.4%20.6%
Married62.7%64.5%
Separated0.0%0.0%
Widowed5.1%6.5%
Divorced7.8%8.4%

Education

Less than 9th grade 6.7%
Some HS, no diploma 1.5%
HS graduate 60.6%
Some college, no degree 6.8%
Associate's degree 15.8%
Bachelor's degree 7.3%
Graduate / professional 1.3%
Metric%
HS diploma or higher91.8%
Bachelor's or higher8.7%

School enrollment (ages 3–17)

TypeCount%
Nursery / preschool83.2%
Kindergarten239.1%
Elementary school15159.7%
High school6626.1%
College / grad school52.0%

Employment

Industry of employment

Education & healthcare 22.2%
Agriculture & mining 17.9%
Construction 11.3%
Retail trade 10.7%
Manufacturing 9.8%
Professional & management 8.4%
Wholesale trade 5.7%
Other services 5.4%
Finance & real estate 3.2%
Transportation & utilities 2.9%
Public administration 1.1%
Information 0.7%
Arts, food & hospitality 0.7%

Occupation

Category%
Management, business & arts30.6%
Service13.2%
Sales & office20.4%
Natural resources & construction22.7%
Production & transportation13.2%

Employment type

Type%
Private sector81.0%
Government4.3%
Self-employed14.7%
Unpaid family workers0.0%

Commute

Method%
Drive alone71.1%
Carpool4.4%
Public transit0.0%
Walk2.7%
Work from home21.8%
Other means0.0%
Avg commute (minutes)14.4

Poverty

All people 9.6%
Under 18 years 13.0%
18 and over 7.7%
Married-couple families 4.8%
Female-led households 72.7%

Income support

Source% of households
Social Security28.9%
Retirement income15.3%
Supplemental Security3.8%
Cash public assistance0.6%
Food stamps / SNAP2.9%

Health indicators

Condition%
Obesity33.3%
High blood pressure29.6%
High cholesterol28.4%
Diabetes8.6%
Heart disease5.9%
Stroke2.6%
Asthma9.0%
Arthritis21.4%
Kidney disease2.5%
Pulmonary disease6.0%
Cancer6.4%
Behavior / access%
Smoking17.3%
Binge drinking22.6%
No physical activity22.2%
Less than 7 hrs sleep30.0%
Depression17.6%
Fair or poor health11.2%
Poor mental health13.5%
Poor physical health8.6%
No health insurance9.6%
Visited doctor (checkup)74.8%
Visited dentist66.7%
Cholesterol screening86.7%
Teeth loss13.2%

Veterans & disability

VeteransCount%
Civilian veterans263.9%
Disability%
Any disability11.0%
Under 182.8%
18–64 years7.3%
65 and over45.0%

Health insurance coverage

Type%
Private insurance55.3%
Public insurance44.1%
No insurance10.5%
Uninsured under 190.8%

Language & origin

Language spoken at home (age 5+)

LanguageCount%
English only87486.4%
Spanish00.0%
Other Indo-European00.0%
Asian & Pacific Islander00.0%
Other languages00.0%

Place of birth & citizenship

OriginCount%
Native born (US)98697.4%
Born in same state98697.4%
Born in different state59959.2%
Foreign born00.0%
Naturalized citizen262.6%
Not a US citizen2492.3%

Ancestry

AncestryCount%
English64263.4%
Polish202%
Arab141.4%
AncestryCount%
Italian121.2%
French101%
Dutch101%

Technology access

Metric% of households
Computer access34.2%
Internet access90.8%

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

Frequently asked questions about ZIP code 51235

What city is ZIP code 51235 in?

ZIP code 51235 is primarily assigned to Doon, Iowa.

What county is ZIP code 51235 in?

ZIP code 51235 falls within Lyon County, Iowa.

Is ZIP code 51235 family-oriented?

35% of residents in ZIP code 51235 are under 18, reflecting a younger, family-oriented community.

How educated is the population of ZIP code 51235?

9% of residents hold a bachelor's degree or higher — below the national average of ~33%, consistent with a trades-oriented local economy.

Is ZIP code 51235 mostly owner-occupied?

81% of occupied units in ZIP code 51235 are owner-occupied, well above the national average.

What is the typical home value in ZIP code 51235?

The median home value in ZIP code 51235 is $193,800.

What timezone is ZIP code 51235 in?

ZIP code 51235 observes the CST timezone.

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