52140 ZIP Code — Dorchester, IA

Allamakee County, Iowa

ZIP code 52140 is located in Dorchester, Iowa, within Allamakee County. It covers approximately 73.82 square miles and serves a population of 453 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 563.

About ZIP code 52140

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 $172,200. Owner-occupancy is high at 95%, well above the national average.

The dominant occupation class is management, business, and professional, with agriculture and mining as the leading industry. The average commute of 28 minutes is near the national average.

Educational attainment is near the national average, with 22% of residents holding a bachelor's degree or higher.

453
population
73.82
sq mi land
Standard
ZIP type
Central (CT)
timezone
52140 ZIP code map
Cities in ZIP code 52140

Below are the cities the US Postal Service accepts for ZIP code 52140. Using any city not on this list may result in mail delivery delays.

City Status
Dorchester Acceptable
Demographics updated 06/2026
Population
Total population 453
Population density 6 / sq mi
State FIPS 19
County FIPS 005
Geography
Land area 73.82 sq mi
Water area 0.02 sq mi
Latitude 43.4301
Longitude -91.5597
Timezone Central (CT)
Area code 563
Total population by age
Gender
Race & ethnicity
Economics updated 06/2026
Household income
Income range This ZIP County avg State avg
Under $50k 54.0% 45.9% 40.1%
$50k – $100k 25.1% 33.6% 33.4%
$100k – $200k 14.5% 16.4% 21.5%
Over $200k 6.4% 4.1% 5.0%

Demographics & statistics

453
Population
6
People per sq mi
42.3
Median age
$0
Median household income
$62,151
Per capita income
$172,200
Median home value
$0
Median monthly rent
95.3%
Home ownership
2.6%
Poverty rate
0.0%
Unemployment
245
Housing units
21.6%
Bachelor's or higher

Age distribution

Male Female
11
Under 5
7
26
5–9
17
18
10–14
12
9
15–19
6
25
20–24
16
27
25–34
17
26
35–44
16
22
45–54
14
14
55–59
9
35
60–64
22
51
65–74
32
3
75–84
2
10
85+
6
← Male
Female →

Age summary

GroupCount%
Under 1810623.4%
18 and over34776.6%
65 and over10423.0%
Median age42.3 years

Race & ethnicity

White 97.8%
Two or more races 2.2%
GroupCount%
White44397.8%
Two or more races102.2%

Household income

Income range This ZIP County avg State avg
Under $50k 54.0% 45.9% 40.1%
$50k – $100k 25.1% 33.6% 33.4%
$100k – $200k 14.5% 16.4% 21.5%
Over $200k 6.4% 4.1% 5.0%
Under $10k 3.3%
$10k–$15k 1.4%
$15k–$25k 34.4%
$25k–$35k 5.6%
$50k–$75k 5.1%
$75k–$100k 23.3%
$100k–$150k 6.5%
$150k–$200k 3.7%
$200k+ 16.7%
Range% of households
Under $10k3.3%
$10k–$15k1.4%
$15k–$25k34.4%
$25k–$35k5.6%
$50k–$75k5.1%
$75k–$100k23.3%
$100k–$150k6.5%
$150k–$200k3.7%
$200k+16.7%
Median income$0

Housing

Home values

Under $50k 14.6%
$50k–$100k 25.9%
$150k–$200k 10.7%
$200k–$300k 15.6%
$300k–$500k 14.6%
$500k–$1M 18.5%

Housing overview

MetricValue
Median home value$172,200
Median rent / month$0
Owner occupied95.3%
Renter occupied4.7%
Vacant15.7%
Single-family detached87.8%
Large apartment buildings0.0%
Mobile homes12.2%
Median rooms6.8
Avg household size (owned)2.03

Year built

Era%
2020 or later0.0%
2010–201911.4%
2000–200920.8%
1990–199911.8%
1980–198922.0%
1970–19792.0%
1960–19690.0%
1950–19590.0%
1940–19490.0%
1939 or earlier32.2%

Bedrooms

Size% of units
No bedroom (studio)2.0%
1 bedroom1.2%
2 bedrooms29.4%
3 bedrooms44.7%
4 bedrooms13.3%
5+ bedrooms9.4%

Vehicles per household

Vehicles% of households
No vehicle0.0%
1 vehicle36.3%
2 vehicles33.5%
3 or more30.2%

Heating fuel

Fuel type%
Electricity3.7%
Propane / LP gas79.1%
Fuel oil10.2%
Wood7.0%

Households & families

Household typeCount%
Married-couple family11955.3%
Cohabiting couple00.0%
Male householder, no spouse9142.3%
Female householder, no spouse52.3%
Households with children under 185827.0%
Households with seniors (65+)8941.4%
Average household size2.10

Marital status

StatusMaleFemale
Never married26.3%15.9%
Married59.4%80.7%
Separated0.0%0.0%
Widowed0.0%3.4%
Divorced14.3%0.0%

Education

Less than 9th grade 2.3%
Some HS, no diploma 2.0%
HS graduate 34.3%
Some college, no degree 26.1%
Associate's degree 13.7%
Bachelor's degree 19.3%
Graduate / professional 2.3%
Metric%
HS diploma or higher95.8%
Bachelor's or higher21.6%

School enrollment (ages 3–17)

TypeCount%
Nursery / preschool1716.8%
Kindergarten1312.9%
Elementary school3534.7%
High school1514.9%
College / grad school2120.8%

Employment

Industry of employment

Agriculture & mining 26.5%
Education & healthcare 24.0%
Retail trade 22.6%
Construction 6.1%
Wholesale trade 4.3%
Information 3.9%
Arts, food & hospitality 3.6%
Other services 3.2%
Professional & management 2.9%
Finance & real estate 1.4%
Public administration 1.4%

Occupation

Category%
Management, business & arts41.9%
Service21.5%
Sales & office17.6%
Natural resources & construction19.0%
Production & transportation0.0%

Employment type

Type%
Private sector68.8%
Government4.3%
Self-employed26.9%
Unpaid family workers0.0%

Commute

Method%
Drive alone75.6%
Carpool1.4%
Public transit0.0%
Walk6.5%
Work from home16.5%
Other means0.0%
Avg commute (minutes)28.3

Poverty

All people 2.6%
Under 18 years 0.0%
18 and over 3.5%
Married-couple families 0.0%
Female-led households 0.0%

Income support

Source% of households
Social Security29.8%
Retirement income13.0%
Supplemental Security4.2%
Cash public assistance0.0%
Food stamps / SNAP11.2%

Health indicators

Condition%
Obesity38.2%
High blood pressure35.1%
High cholesterol34.6%
Diabetes10.9%
Heart disease7.5%
Stroke3.3%
Asthma9.1%
Arthritis26.8%
Kidney disease3.0%
Pulmonary disease7.5%
Cancer7.5%
Behavior / access%
Smoking18.1%
Binge drinking22.2%
No physical activity25.6%
Less than 7 hrs sleep30.2%
Depression17.1%
Fair or poor health13.3%
Poor mental health12.8%
Poor physical health10.3%
No health insurance9.0%
Visited doctor (checkup)73.9%
Visited dentist63.8%
Cholesterol screening89.9%
Teeth loss12.5%

Veterans & disability

VeteransCount%
Civilian veterans102.9%
Disability%
Any disability2.0%
Under 180.0%
18–64 years0.0%
65 and over8.7%

Health insurance coverage

Type%
Private insurance84.1%
Public insurance26.5%
No insurance0.0%
Uninsured under 190.0%

Language & origin

Language spoken at home (age 5+)

LanguageCount%
English only43596.0%
Spanish00.0%
Other Indo-European00.0%
Asian & Pacific Islander00.0%
Other languages00.0%

Place of birth & citizenship

OriginCount%
Native born (US)453100.0%
Born in same state453100.0%
Born in different state24353.6%
Foreign born00.0%
Naturalized citizen00.0%
Not a US citizen00.0%

Ancestry

AncestryCount%
Polish15534.2%
Italian5712.6%
French5011%
AncestryCount%
Arab4810.6%
Dutch30.7%

Technology access

Metric% of households
Computer access47.5%
Internet access78.6%

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

Frequently asked questions about ZIP code 52140

What city is ZIP code 52140 in?

ZIP code 52140 is primarily assigned to Dorchester, Iowa.

What county is ZIP code 52140 in?

ZIP code 52140 falls within Allamakee County, Iowa.

Is ZIP code 52140 mostly owner-occupied?

95% of occupied units in ZIP code 52140 are owner-occupied, well above the national average.

What is the typical home value in ZIP code 52140?

The median home value in ZIP code 52140 is $172,200.

What is the population of ZIP code 52140?

ZIP code 52140 has an estimated population of 453 residents, with a density of 6 people per square mile.

What timezone is ZIP code 52140 in?

ZIP code 52140 observes the CST timezone.

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