Walnut, IA · standard
ZIP Code 51577
Pottawattamie County, Iowa - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 1,184
- 6/sq mi Low-density area
- $71,518
- Median income Near-median income area
- $134,100
- Median home value Below-median home value
- 16.8%
- Bachelor's or higher Below-average bachelor's attainment
National ZIP placement
Walnut pairs a below-median household income with among the most affordable home values nationally, in a rural, homeowner-dominated area.
- 49th pct
- household income, US ZIPs
- 21st pct
- home value, US ZIPs
- 6
- people per sq mi
- 77%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 51577 against every reporting US ZIP.
ZIP code 51577 is a sparsely populated ZIP (a standard USPS delivery area) in Walnut, Pottawattamie County, Iowa, home to just 1,184 residents across 207.7 square miles, a density of 6 people per square mile, in the Chicago time zone.
ZIP 51577 lands in the middle-income range, with a median household income of $71,518 (7% below the average Iowa ZIP), while per-capita income is $31,949. The poverty rate is 10.1%, with unemployment at 6.5%; those measures add context to the income figure. Home values sit below the statewide ZIP benchmark: the median is $134,100 (24% below the average Iowa ZIP), and median rent is $874; owner occupancy is 77.3%.
Educational attainment sits below the national norm: 16.8% of adults hold a bachelor's degree or higher, the median age is 64.9, and the average commute is -. The page also surfaces 3 ZIP codes within roughly 10 miles and 6 more in Pottawattamie County, so 51577 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 51577
Top 5 sectors by establishment count in Walnut, IA
Which industries have the most business establishments in ZIP 51577.
- Finance and insurance
Finance and insurance
7 establishments
- Other services (except public administration)
Other services (except public administration)
6 establishments
- Retail trade
Retail trade
5 establishments
- Construction
Construction
3 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 51577, Walnut, 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
1,184
Population
207.7
Area (sq mi)
6
People / sq mi
Chicago
Time Zone
standard
ZIP Type
Who lives in ZIP 51577?
64.9
Median Age
43.8%
Male
56.2%
Female
0.7%
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?
$71,518
Median Household Income
-7% vs state ZIP avg
$31,949
Per Capita Income
10.1%
Poverty Rate
6.5%
Unemployment Rate
How ZIP 51577 ranks among Iowa ZIPs
Walnut, 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)
$71,518 43rd percentile higher than 43% 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
460housing units
460
Total Housing Units
406
Occupied Units
54
Vacant Units
2.27
Avg Household Size
Occupancy Type
$134,100
Median Home Value
-24% vs state ZIP avg
$874
Median Rent
1938
Median Year Built
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What businesses operate in this ZIP?
Census Bureau data shows 29 business establishments in ZIP 51577, employing approximately 90 people with a combined annual payroll of $3,117,000.
29
Businesses
90
Employees
$3.1M
Annual Payroll
4
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Finance and insurance | 7 | 24.1% |
| Other services (except public administration) | 6 | 20.7% |
| Retail trade | 5 | 17.2% |
| Construction | 3 | 10.3% |
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 51577 vs 51552 →
ZIP 51577 vs its nearest neighbors, by population
Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 51521
Avoca (51521)
2,036 residents
- 51577
Walnut (51577)
1,184 residents
- 51531
Elk Horn (51531)
914 residents
- 51552 301
Marne (51552)
301 residents
What this shows Among its immediate neighbors, ZIP 51577 ranks #2 by population - useful context the national average alone can't give.
ZIP 51577 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 51552
Marne (51552)
$90,000 median income
- 51521
Avoca (51521)
$73,769 median income
- 51577
Walnut (51577)
$71,518 median income
- 51531
Elk Horn (51531)
$59,199 median income
What this shows By household income, ZIP 51577 ranks #3 of 4 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 51577, 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 (1,184 here; floor ≥1,000).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.
More ZIP Codes in Pottawattamie County
Related Areas
Frequently Asked Questions
What county is ZIP code 51577 in?
ZIP code 51577 (Walnut) is located in Pottawattamie County, Iowa. Pottawattamie County contains multiple ZIP codes, see the full list at /counties/pottawattamie-ia.
What is the population of ZIP code 51577?
ZIP code 51577 in Walnut, IA has a population of 1,184 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 51577?
The median household income in ZIP 51577 is $71,518, which is 6% below the national average of $76,288.
What is the average home value in ZIP 51577?
The median home value in ZIP 51577 is $134,100, which is 52% below the national average of $278,155.
What is the demographic makeup of ZIP 51577?
The largest racial group in ZIP 51577 is White at 96.2%. Hispanic or Latino residents make up 2.9% of the population.
How many businesses are in ZIP code 51577?
ZIP code 51577 has 29 business establishments employing approximately 90 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 51577?
The top industries by establishment count in ZIP 51577 are: Finance and insurance (7), Other services (except public administration) (6), Retail trade (5). There are 4 industry sectors represented in total.
What is the education level in ZIP code 51577?
In ZIP code 51577, 53.5% of residents aged 25+ have a high school diploma or higher, and 16.8% 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 51577?
In ZIP code 51577, approximately 77.3% of occupied housing units are owner-occupied and 22.7% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 51577?
The poverty rate in ZIP code 51577 is 10.1% 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 51577's numbers, next.
- See how ZIP 51577 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Walnut, 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.