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 Low-density area
- $72,188
- Median income Near-median income area
- $208,300
- Median home value Near-median home value
- 36.2%
- Bachelor's or higher Above-average bachelor's attainment
National ZIP placement
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 average Iowa ZIP), while per-capita income is $53,455. Both reported hardship measures are comparatively low in absolute terms: poverty is 0.1% and unemployment is 0.0%. Housing is both higher-cost and owner-heavy: median home value is $208,300 (19% above the average Iowa ZIP), while 89.5% of occupied homes are owner-occupied.
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 -. The page also surfaces 2 ZIP codes within roughly 10 miles and 6 more in Allamakee County, so 52140 can be compared with both its immediate and county-level context.
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
Who lives in ZIP 52140?
39.1
Median Age
49.6%
Male
50.4%
Female
0.0%
Foreign-Born
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 ZIP avg
$53,455
Per Capita Income
0.1%
Poverty Rate
0.0%
Unemployment Rate
How ZIP 52140 ranks among Iowa ZIPs
Dorchester, IA household income vs. every Iowa ZIP code
Median household income among 911 reporting Iowa ZIPs (this ZIP's population is too small for a reliable national-corpus placement)
$72,188 45th percentile higher than 45% of 911 Iowa ZIPs
Each bar is a $20K-wide band; taller bars hold more Iowa 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?
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What does housing look like?
Housing stock: occupied vs vacant
312housing units
312
Total Housing Units
276
Occupied Units
36
Vacant Units
2.43
Avg Household Size
Occupancy Type
$208,300
Median Home Value
+19% vs state ZIP avg
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.
- 55974
Spring Grove (55974)
2,132 residents
- 52140 532
Dorchester (52140)
532 residents
- 55931 330
Eitzen (55931)
330 residents
What this shows Among its immediate neighbors, ZIP 52140 ranks #2 by population - useful context the national average alone can't give.
ZIP 52140 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 55931
Eitzen (55931)
$77,917 median income
- 52140
Dorchester (52140)
$72,188 median income
- 55974
Spring Grove (55974)
$59,205 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.
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 52140, both outside IA so the neighborhoods are not geographic containment (Nearby and same-county blocks stay local).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.
More ZIP Codes in Allamakee County
Related Areas
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.
Related
Take this with you
What to do with ZIP 52140's numbers, next.
- See how ZIP 52140 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Dorchester, IA ranks among every U.S. ZIP code on income, education, or homeownership View national rankings
- Save this ZIP to your shortlist to track alongside others you're considering View your shortlist
ZIP Code Tabulation Areas (ZCTAs) are Census Bureau approximations of USPS ZIP codes; figures describe the ZCTA area, not any single address within it.