Doon, IA · standard
ZIP Code 51235
Lyon County, Iowa - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 1,079
- 7/sq mi Low-density area
- $71,016
- Median income Near-median income area
- $240,700
- Median home value Near-median home value
- 7.6%
- Bachelor's or higher Below-average bachelor's attainment
National ZIP placement
Doon pairs a below-median household income with above-median home values, in a rural, homeowner-dominated area.
- 48th pct
- household income, US ZIPs
- Top 45%
- home value, US ZIPs
- 7
- people per sq mi
- 74%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 51235 against every reporting US ZIP.
ZIP code 51235 is a sparsely populated ZIP (a standard USPS delivery area) in Doon, Lyon County, Iowa, home to just 1,079 residents across 145.8 square miles, a density of 7 people per square mile, in the Chicago time zone.
ZIP 51235 lands in the middle-income range, with a median household income of $71,016 (7% below the average Iowa ZIP), while per-capita income is $40,773. The poverty rate is 9.8%, with unemployment at 9.3%; those measures add context to the income figure. Housing is both higher-cost and owner-heavy: median home value is $240,700 (37% above the average Iowa ZIP), while 74.2% of occupied homes are owner-occupied and median rent is $531.
Formal educational attainment runs low here: just 7.6% of adults hold a bachelor's degree or higher, the median age is 37.1, and the average commute is -. The page also surfaces 5 ZIP codes within roughly 10 miles and 6 more in Lyon County, so 51235 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 →
Top industries in ZIP 51235
Top 5 sectors by establishment count in Doon, IA
Which industries have the most business establishments in ZIP 51235.
- Construction
Construction
9 establishments
- Other services (except public administration)
Other services (except public administration)
8 establishments
- Transportation and warehousing
Transportation and warehousing
7 establishments
- Retail trade
Retail trade
5 establishments
- Manufacturing
Manufacturing
4 establishments
What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.
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 51235, Doon, 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
1,079
Population
145.8
Area (sq mi)
7
People / sq mi
Chicago
Time Zone
standard
ZIP Type
Who lives in ZIP 51235?
37.1
Median Age
53.6%
Male
46.4%
Female
1.9%
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?
$71,016
Median Household Income
-7% vs state ZIP avg
$40,773
Per Capita Income
9.8%
Poverty Rate
9.3%
Unemployment Rate
How ZIP 51235 ranks among Iowa ZIPs
Doon, 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)
$71,016 41st percentile higher than 41% 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
411housing units
411
Total Housing Units
411
Occupied Units
0
Vacant Units
2.45
Avg Household Size
Occupancy Type
$240,700
Median Home Value
+37% vs state ZIP avg
$531
Median Rent
1984
Median Year Built
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What businesses operate in this ZIP?
Census Bureau data shows 44 business establishments in ZIP 51235, employing approximately 178 people with a combined annual payroll of $8,855,000.
44
Businesses
178
Employees
$8.9M
Annual Payroll
6
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Construction | 9 | 20.4% |
| Other services (except public administration) | 8 | 18.2% |
| Transportation and warehousing | 7 | 15.9% |
| Retail trade | 5 | 11.4% |
| Manufacturing | 4 | 9.1% |
| Wholesale trade | 4 | 9.1% |
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 51235 vs 51239 →
ZIP 51235 vs its nearest neighbors, by population
Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 51247
Rock Valley (51247)
4,870 residents
- 51246
Rock Rapids (51246)
3,844 residents
- 51239
Hull (51239)
3,123 residents
- 51235 1,079
Doon (51235)
1,079 residents
- 51230 462
Alvord (51230)
462 residents
- 51242 212
Lester (51242)
212 residents
What this shows Among its immediate neighbors, ZIP 51235 ranks #4 by population - useful context the national average alone can't give.
ZIP 51235 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 51242
Lester (51242)
$95,625 median income
- 51247
Rock Valley (51247)
$78,358 median income
- 51239
Hull (51239)
$77,540 median income
- 51230
Alvord (51230)
$75,625 median income
- 51246
Rock Rapids (51246)
$72,400 median income
- 51235
Doon (51235)
$71,016 median income
What this shows By household income, ZIP 51235 ranks #6 of 6 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 51235, both outside IA so the neighborhoods are not geographic containment (Nearby and same-county blocks stay local).
Similar population
Nearest cross-state ZIPs by resident population (1,079 here; floor ≥1,000).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.
More ZIP Codes in Lyon County
Related Areas
Frequently Asked Questions
What county is ZIP code 51235 in?
ZIP code 51235 (Doon) is located in Lyon County, Iowa. Lyon County contains multiple ZIP codes, see the full list at /counties/lyon-ia.
What is the population of ZIP code 51235?
ZIP code 51235 in Doon, IA has a population of 1,079 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 51235?
The median household income in ZIP 51235 is $71,016, which is 7% below the national average of $76,288.
What is the average home value in ZIP 51235?
The median home value in ZIP 51235 is $240,700, which is 13% below the national average of $278,155.
What is the demographic makeup of ZIP 51235?
The largest racial group in ZIP 51235 is White at 99.8%. Hispanic or Latino residents make up 0.1% of the population.
How many businesses are in ZIP code 51235?
ZIP code 51235 has 44 business establishments employing approximately 178 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 51235?
The top industries by establishment count in ZIP 51235 are: Construction (9), Other services (except public administration) (8), Transportation and warehousing (7). There are 6 industry sectors represented in total.
What is the education level in ZIP code 51235?
In ZIP code 51235, 65.9% of residents aged 25+ have a high school diploma or higher, and 7.6% 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 51235?
In ZIP code 51235, approximately 74.2% of occupied housing units are owner-occupied and 25.8% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 51235?
The poverty rate in ZIP code 51235 is 9.8% 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 51235's numbers, next.
- See how ZIP 51235 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Doon, 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.