52631 ZIP Code — Houghton, IA
Lee County, Iowa
ZIP code 52631 is located in Houghton, Iowa, within Lee County. It covers approximately 0.20 square miles and serves a population of 61 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 319.
61
population
0.20
sq mi land
Standard
ZIP type
Central (CT)
timezone
52631 ZIP code map
Cities in ZIP code 52631
Below are the cities the US Postal Service accepts for ZIP code 52631. Using any city not on this list may result in mail delivery delays.
| City | Status |
|---|---|
| Houghton | Acceptable |
Demographics
updated 06/2026
| Population | |
|---|---|
| Total population | 61 |
| Population density | 305 / sq mi |
| State FIPS | 19 |
| County FIPS | 111 |
| Geography | |
|---|---|
| Land area | 0.20 sq mi |
| Water area | 0.00 sq mi |
| Latitude | 40.7407 |
| Longitude | -91.6895 |
| Timezone | Central (CT) |
| Area code | 319 |
Total population by age
Gender
Race & ethnicity
Demographics & statistics
61
Population
305
People per sq mi
42.8
Median age
$107,500
Median household income
$48,098
Per capita income
$187,500
Median home value
$0
Median monthly rent
100.0%
Home ownership
0.0%
Poverty rate
0.0%
Unemployment
22
Housing units
38.6%
Bachelor's or higher
Age distribution
Male
Female
3
Under 5
3
3
5–9
4
1
10–14
2
0
15–19
1
4
25–34
4
3
35–44
4
1
45–54
2
2
55–59
3
2
60–64
2
6
65–74
6
2
75–84
2
0
85+
1
← Male
Female →
Age summary
| Group | Count | % |
|---|---|---|
| Under 18 | 17 | 27.9% |
| 18 and over | 44 | 72.1% |
| 65 and over | 17 | 27.9% |
| Median age | 42.8 years | |
Race & ethnicity
White
96.7%
Two or more races
3.3%
| Group | Count | % |
|---|---|---|
| White | 59 | 96.7% |
| Two or more races | 2 | 3.3% |
Household income
$15k–$25k
4.5%
$35k–$50k
4.5%
$50k–$75k
13.6%
$75k–$100k
18.2%
$100k–$150k
31.8%
$150k–$200k
13.6%
$200k+
13.6%
| Range | % of households |
|---|---|
| $15k–$25k | 4.5% |
| $35k–$50k | 4.5% |
| $50k–$75k | 13.6% |
| $75k–$100k | 18.2% |
| $100k–$150k | 31.8% |
| $150k–$200k | 13.6% |
| $200k+ | 13.6% |
| Median income | $107,500 |
Housing
Home values
$50k–$100k
4.5%
$100k–$150k
18.2%
$150k–$200k
36.4%
$200k–$300k
22.7%
$300k–$500k
13.6%
$500k–$1M
4.5%
Housing overview
| Metric | Value |
|---|---|
| Median home value | $187,500 |
| Median rent / month | $0 |
| Owner occupied | 100.0% |
| Renter occupied | 0.0% |
| Vacant | 0.0% |
| Single-family detached | 100.0% |
| Large apartment buildings | 0.0% |
| Mobile homes | 0.0% |
| Median rooms | 6.8 |
| Avg household size (owned) | 2.77 |
Year built
| Era | % |
|---|---|
| 2020 or later | 0.0% |
| 2010–2019 | 0.0% |
| 2000–2009 | 27.3% |
| 1990–1999 | 4.5% |
| 1980–1989 | 9.1% |
| 1970–1979 | 31.8% |
| 1960–1969 | 18.2% |
| 1950–1959 | 0.0% |
| 1940–1949 | 0.0% |
| 1939 or earlier | 9.1% |
Bedrooms
| Size | % of units |
|---|---|
| No bedroom (studio) | 0.0% |
| 1 bedroom | 4.5% |
| 2 bedrooms | 4.5% |
| 3 bedrooms | 63.6% |
| 4 bedrooms | 13.6% |
| 5+ bedrooms | 13.6% |
Vehicles per household
| Vehicles | % of households |
|---|---|
| No vehicle | 0.0% |
| 1 vehicle | 18.2% |
| 2 vehicles | 31.8% |
| 3 or more | 50.0% |
Heating fuel
| Fuel type | % |
|---|---|
| Utility gas | 9.1% |
| Electricity | 31.8% |
| Propane / LP gas | 59.1% |
Households & families
| Household type | Count | % |
|---|---|---|
| Married-couple family | 19 | 86.4% |
| Cohabiting couple | 0 | 0.0% |
| Male householder, no spouse | 1 | 4.5% |
| Female householder, no spouse | 2 | 9.1% |
| Households with children under 18 | 7 | 31.8% |
| Households with seniors (65+) | 10 | 45.5% |
| Average household size | 2.77 | |
Marital status
| Status | Male | Female |
|---|---|---|
| Never married | 13.6% | 0.0% |
| Married | 86.4% | 91.3% |
| Separated | 0.0% | 0.0% |
| Widowed | 0.0% | 4.3% |
| Divorced | 0.0% | 4.3% |
Education
Less than 9th grade
0.0%
Some HS, no diploma
0.0%
HS graduate
34.1%
Some college, no degree
6.8%
Associate's degree
20.5%
Bachelor's degree
34.1%
Graduate / professional
4.5%
| Metric | % |
|---|---|
| HS diploma or higher | 100.0% |
| Bachelor's or higher | 38.6% |
School enrollment (ages 3–17)
| Type | Count | % |
|---|---|---|
| Nursery / preschool | 2 | 18.2% |
| Kindergarten | 2 | 18.2% |
| Elementary school | 5 | 45.5% |
| High school | 1 | 9.1% |
| College / grad school | 1 | 9.1% |
Employment
Industry of employment
Agriculture & mining
23.1%
Retail trade
19.2%
Education & healthcare
19.2%
Manufacturing
11.5%
Wholesale trade
7.7%
Finance & real estate
7.7%
Transportation & utilities
3.8%
Professional & management
3.8%
Public administration
3.8%
Occupation
| Category | % |
|---|---|
| Management, business & arts | 80.8% |
| Service | 3.8% |
| Sales & office | 11.5% |
| Natural resources & construction | 3.8% |
| Production & transportation | 0.0% |
Employment type
| Type | % |
|---|---|
| Private sector | 80.8% |
| Government | 11.5% |
| Self-employed | 7.7% |
| Unpaid family workers | 0.0% |
Commute
| Method | % |
|---|---|
| Drive alone | 80.8% |
| Carpool | 0.0% |
| Public transit | 0.0% |
| Walk | 0.0% |
| Work from home | 19.2% |
| Other means | 0.0% |
| Avg commute (minutes) | 16.7 |
Poverty
All people
0.0%
Under 18 years
0.0%
18 and over
0.0%
Married-couple families
0.0%
Female-led households
0.0%
Income support
| Source | % of households |
|---|---|
| Social Security | 54.5% |
| Retirement income | 45.5% |
| Supplemental Security | 0.0% |
| Cash public assistance | 0.0% |
| Food stamps / SNAP | 0.0% |
Health indicators
| Condition | % |
|---|---|
| Obesity | 0.0% |
| High blood pressure | 0.0% |
| High cholesterol | 0.0% |
| Diabetes | 0.0% |
| Heart disease | 0.0% |
| Stroke | 0.0% |
| Asthma | 0.0% |
| Arthritis | 0.0% |
| Kidney disease | 0.0% |
| Pulmonary disease | 0.0% |
| Cancer | 0.0% |
| Behavior / access | % |
|---|---|
| Smoking | 0.0% |
| Binge drinking | 0.0% |
| No physical activity | 0.0% |
| Less than 7 hrs sleep | 0.0% |
| Depression | 0.0% |
| Fair or poor health | 0.0% |
| Poor mental health | 0.0% |
| Poor physical health | 0.0% |
| No health insurance | 0.0% |
| Visited doctor (checkup) | 0.0% |
| Visited dentist | 0.0% |
| Cholesterol screening | 0.0% |
| Teeth loss | 0.0% |
Veterans & disability
| Veterans | Count | % |
|---|---|---|
| Civilian veterans | 6 | 13.6% |
| Disability | % |
|---|---|
| Any disability | 13.1% |
| Under 18 | 5.9% |
| 18–64 years | 7.4% |
| 65 and over | 29.4% |
Health insurance coverage
| Type | % |
|---|---|
| Private insurance | 95.1% |
| Public insurance | 29.5% |
| No insurance | 0.0% |
| Uninsured under 19 | 0.0% |
Language & origin
Language spoken at home (age 5+)
| Language | Count | % |
|---|---|---|
| English only | 55 | 90.2% |
| 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) | 61 | 100.0% |
| Born in same state | 61 | 100.0% |
| Born in different state | 60 | 98.4% |
| Foreign born | 0 | 0.0% |
| Naturalized citizen | 0 | 0.0% |
| Not a US citizen | 0 | 0.0% |
Ancestry
| Ancestry | Count | % |
|---|---|---|
| Arab | 9 | 14.8% |
| English | 4 | 6.6% |
| Ancestry | Count | % |
|---|---|---|
| French | 2 | 3.3% |
| Italian | 1 | 1.6% |
Technology access
| Metric | % of households |
|---|---|
| Computer access | 36.1% |
| Internet access | 100.0% |
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 52631
What city is ZIP code 52631 in?
ZIP code 52631 is primarily assigned to Houghton, Iowa.
What county is ZIP code 52631 in?
ZIP code 52631 falls within Lee County, Iowa.
Does ZIP code 52631 have a large retiree population?
55% of households in ZIP code 52631 receive Social Security income, suggesting a significant retiree or disability population.
Does ZIP code 52631 have an older population?
28% of residents in ZIP code 52631 are 65 or older, above the national average of ~17%.
Does ZIP code 52631 have a large veteran population?
14% of civilians in ZIP code 52631 are veterans, above the national average of ~7%.
What is the median household income in ZIP code 52631?
The median household income in ZIP code 52631 is $107,500, above the national median of ~$75,000.
What timezone is ZIP code 52631 in?
ZIP code 52631 observes the CST timezone.