PlainZIP

Dorchester, IA · standard

ZIP Code 52140

Allamakee County, Iowa - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.

532
3/sq mi
$72,188
Median income
$208,300
Median home value
36.2%
Bachelor's or higher

The verdict

Dorchester pairs an above-median household income with below-median home values, in a rural, homeowner-dominated area.

Top 50%
household income, US ZIPs
46th pct
home value, US ZIPs
3
people per sq mi
90%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 52140 against every reporting US ZIP.

ZIP code 52140 is a sparsely populated ZIP (a standard USPS delivery area) in Dorchester, Allamakee County, Iowa, home to just 532 residents across 204.6 square miles, a density of 3 people per square mile, in the Chicago time zone.

ZIP 52140 lands in the middle-income range, with a median household income of $72,188 (6% below the Iowa average), while per-capita income is $53,455. 0.1% of residents live below the poverty line, and the unemployment rate reads 0.0%. Median home value sits at $208,300 (19% above the state average), median rent at - a month, and owner-occupancy at 89.5%.

A solid share of residents have a four-year degree: 36.2% of adults hold a bachelor's degree or higher, the median age is 39.1, and the average commute is -. Beyond these figures, 2 nearby ZIP codes within about 10 miles are surfaced below, along with 6 more sharing Allamakee County, letting you compare 52140 to its immediate surroundings rather than a national baseline alone.

Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →

Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 52140, Dorchester, IA · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.

Quick Facts

532

Population

204.6

Area (sq mi)

3

People / sq mi

Chicago

Time Zone

standard

ZIP Type

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 52140?

39.1

Median Age

49.6%

Male

50.4%

Female

0.0%

Foreign-Born

White 97.9%
African American 0.0%
Asian 0.0%
American Indian or Alaska Native 0.0%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 2.1%
Hispanic or Latino 0.0%

Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How much do residents earn?

$72,188

Median Household Income

-6% vs state

$53,455

Per Capita Income

0.1%

Poverty Rate

0.0%

Unemployment Rate

How ZIP 52140 ranks nationally

Dorchester, IA household income vs. every US ZIP code

Median household income, the full national distribution, with this ZIP marked

$72,188 Top 50% higher than 50% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). Below this entry. $60,000–$80,000: 9,980 US ZIPs (33%). This entry sits in this band. $80,000–$100,000: 5,778 US ZIPs (19%). Above this entry. $100,000–$120,000: 2,855 US ZIPs (9%). Above this entry. $120,000–$140,000: 1,362 US ZIPs (4%). Above this entry. $140,000–$160,000: 686 US ZIPs (2%). Above this entry. $160,000–$180,000: 364 US ZIPs (1%). Above this entry. $180,000–$200,000: 186 US ZIPs (1%). Above this entry. $200,000–$220,000: 324 US ZIPs (1%). Above this entry. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

Each bar is a $20K-wide band; taller bars hold more US ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What is the education profile here?

High School Graduate or Higher 66.2%
Bachelor's Degree or Higher 36.2%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

312

Total Housing Units

276

Occupied Units

36

Vacant Units

2.43

Avg Household Size

Occupancy Type

Owner 89.5%
Renter 10.5%

$208,300

Median Home Value

+19% vs state

1986

Median Year Built

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What businesses operate in this ZIP?

Census Bureau data shows 12 business establishments in ZIP 52140, employing approximately 26 people with a combined annual payroll of $651,000.

12

Businesses

26

Employees

$651K

Annual Payroll

1

Industry Sectors

Industry Establishments % of Total
Construction 3 25.0%

Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.

Nearby ZIP Codes

Want a side-by-side? Compare 52140 vs 55931 →

ZIP 52140 vs its nearest neighbors, by population

Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.

residents

What this shows Among its immediate neighbors, ZIP 52140 ranks #2 by population - useful context the national average alone can't give.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023

ZIP 52140 vs its nearest neighbors, by median income

Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.

median income

What this shows By household income, ZIP 52140 ranks #2 of 3 neighboring ZIPs, local affluence varies block to block, not just metro to metro.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023
ZIP Code City Population Distance
55931 Eitzen, MN 330 8.6 mi
55974 Spring Grove, MN 2,132 11.0 mi

More ZIP Codes in Allamakee County

52172 standard
Waukon, IA
Pop: 6,303
52162 standard
Postville, IA
Pop: 3,285
52151 standard
Lansing, IA
Pop: 2,138
52146 standard
Harpers Ferry, IA
Pop: 1,039
52160 standard
New Albin, IA
Pop: 867
52170 standard
Waterville, IA
Pop: 599

Related Areas

Allamakee County Dorchester, IA Iowa

Frequently Asked Questions

What county is ZIP code 52140 in? ▼
ZIP code 52140 (Dorchester) is located in Allamakee County, Iowa. Allamakee County contains multiple ZIP codes, see the full list at /counties/allamakee-ia.
What is the population of ZIP code 52140? ▼
ZIP code 52140 in Dorchester, IA has a population of 532 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 52140? ▼
The median household income in ZIP 52140 is $72,188, which is 5% below the national average of $76,288.
What is the average home value in ZIP 52140? ▼
The median home value in ZIP 52140 is $208,300, which is 25% below the national average of $278,155.
What is the demographic makeup of ZIP 52140? ▼
The largest racial group in ZIP 52140 is White at 97.9%.
How many businesses are in ZIP code 52140? ▼
ZIP code 52140 has 12 business establishments employing approximately 26 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What is the education level in ZIP code 52140? ▼
In ZIP code 52140, 66.2% of residents aged 25+ have a high school diploma or higher, and 36.2% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What percentage of residents own vs. rent in ZIP 52140? ▼
In ZIP code 52140, approximately 89.5% of occupied housing units are owner-occupied and 10.5% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 52140? ▼
The poverty rate in ZIP code 52140 is 0.1% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.

Read our methodology to see how this data is sourced, computed, and verified.