Hamburg, IA · standard
ZIP Code 51640
Fremont County, Iowa - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 1,748
- 6/sq mi Low-density area
- $65,385
- Median income Near-median income area
- $122,900
- Median home value Below-median home value
- 18.4%
- Bachelor's or higher Near-average bachelor's attainment
National ZIP placement
Hamburg pairs a below-median household income with among the most affordable home values nationally, in a rural, homeowner-dominated area.
- 39th pct
- household income, US ZIPs
- 18th pct
- home value, US ZIPs
- 6
- people per sq mi
- 79%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 51640 against every reporting US ZIP.
ZIP code 51640 covers 312.1 square miles in Hamburg, Fremont County, Iowa (a standard USPS delivery area), with a modest 1,748 residents on file, a density of 6 people per square mile, in the Chicago time zone.
ZIP 51640 reports a modest median household income of $65,385 (15% below the average Iowa ZIP), while per-capita income is $36,780. Both reported hardship measures are comparatively low in absolute terms: poverty is 6.7% and unemployment is 1.0%. Home values sit below the statewide ZIP benchmark: the median is $122,900 (30% below the average Iowa ZIP), and median rent is $729; owner occupancy is 79.1%.
Educational attainment sits below the national norm: 18.4% of adults hold a bachelor's degree or higher, the median age is 43.1, and the average commute is -. The page also surfaces 4 ZIP codes within roughly 10 miles and 6 more in Fremont County, so 51640 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 51640
Top 5 sectors by establishment count in Hamburg, IA
Which industries have the most business establishments in ZIP 51640.
- Wholesale trade
Wholesale trade
5 establishments
- Retail trade
Retail trade
4 establishments
- Transportation and warehousing
Transportation and warehousing
4 establishments
- Health care and social assistance
Health care and social assistance
4 establishments
- Manufacturing
Manufacturing
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 51640, Hamburg, 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
1,748
Population
312.1
Area (sq mi)
6
People / sq mi
Chicago
Time Zone
standard
ZIP Type
Who lives in ZIP 51640?
43.1
Median Age
55.3%
Male
44.7%
Female
0.2%
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?
$65,385
Median Household Income
-15% vs state ZIP avg
$36,780
Per Capita Income
6.7%
Poverty Rate
1.0%
Unemployment Rate
How ZIP 51640 ranks among Iowa ZIPs
Hamburg, 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)
$65,385 30th percentile higher than 30% 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
690housing units
690
Total Housing Units
588
Occupied Units
102
Vacant Units
2.35
Avg Household Size
Occupancy Type
$122,900
Median Home Value
-30% vs state ZIP avg
$729
Median Rent
1949
Median Year Built
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What businesses operate in this ZIP?
Census Bureau data shows 31 business establishments in ZIP 51640, employing approximately 415 people with a combined annual payroll of $27,873,000.
31
Businesses
415
Employees
$27.9M
Annual Payroll
6
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Wholesale trade | 5 | 16.1% |
| Retail trade | 4 | 12.9% |
| Transportation and warehousing | 4 | 12.9% |
| Health care and social assistance | 4 | 12.9% |
| Manufacturing | 3 | 9.7% |
| Other services (except public administration) | 3 | 9.7% |
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 51640 vs 51650 →
ZIP 51640 vs its nearest neighbors, by population
Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 51652
Sidney (51652)
1,783 residents
- 51640
Hamburg (51640)
1,748 residents
- 68421
Peru (68421)
1,107 residents
- 51650 370
Riverton (51650)
370 residents
- 64496 154
Watson (64496)
154 residents
What this shows Among its immediate neighbors, ZIP 51640 ranks #2 by population - useful context the national average alone can't give.
ZIP 51640 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 51652
Sidney (51652)
$82,200 median income
- 51640
Hamburg (51640)
$65,385 median income
- 68421
Peru (68421)
$61,600 median income
- 64496
Watson (64496)
$53,021 median income
- 51650
Riverton (51650)
$49,063 median income
What this shows By household income, ZIP 51640 ranks #2 of 5 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 51640, 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 (1,748 here; floor ≥1,000).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.
More ZIP Codes in Fremont County
Related Areas
Frequently Asked Questions
What county is ZIP code 51640 in?
ZIP code 51640 (Hamburg) is located in Fremont County, Iowa. Fremont County contains multiple ZIP codes, see the full list at /counties/fremont-ia.
What is the population of ZIP code 51640?
ZIP code 51640 in Hamburg, IA has a population of 1,748 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 51640?
The median household income in ZIP 51640 is $65,385, which is 14% below the national average of $76,288.
What is the average home value in ZIP 51640?
The median home value in ZIP 51640 is $122,900, which is 56% below the national average of $278,155.
What is the demographic makeup of ZIP 51640?
The largest racial group in ZIP 51640 is White at 93.7%. Hispanic or Latino residents make up 2.8% of the population.
How many businesses are in ZIP code 51640?
ZIP code 51640 has 31 business establishments employing approximately 415 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 51640?
The top industries by establishment count in ZIP 51640 are: Wholesale trade (5), Retail trade (4), Transportation and warehousing (4). There are 6 industry sectors represented in total.
What is the education level in ZIP code 51640?
In ZIP code 51640, 58.6% of residents aged 25+ have a high school diploma or higher, and 18.4% 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 51640?
In ZIP code 51640, approximately 79.1% of occupied housing units are owner-occupied and 20.9% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 51640?
The poverty rate in ZIP code 51640 is 6.7% 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 51640's numbers, next.
- See how ZIP 51640 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Hamburg, 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.