Calumet, IA · standard
ZIP Code 51009
O'Brien County, Iowa - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 164
- 268/sq mi High-density area
- $58,750
- Median income Below-median income area
- $83,300
- Median home value Below-median home value
- 21.1%
- Bachelor's or higher Near-average bachelor's attainment
National ZIP placement
Calumet pairs a below-median household income with among the most affordable home values nationally, in a low-density, homeowner-dominated area.
- 27th pct
- household income, US ZIPs
- 5th pct
- home value, US ZIPs
- 268
- people per sq mi
- 96%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 51009 against every reporting US ZIP.
ZIP code 51009 is a sparsely populated ZIP (a standard USPS delivery area) in Calumet, O'Brien County, Iowa, home to just 164 residents across 0.6 square miles, a density of 268 people per square mile, in the Chicago time zone.
ZIP 51009 reports a modest median household income of $58,750 (23% below the average Iowa ZIP), while per-capita income is $38,419. The poverty rate is 14.2%, with unemployment at 2.3%; those measures add context to the income figure. Home values sit below the statewide ZIP benchmark: the median is $83,300 (53% below the average Iowa ZIP); owner occupancy is 96.0%.
Educational attainment sits below the national norm: 21.1% of adults hold a bachelor's degree or higher, the median age is 38.3, and the average commute is -. The page also surfaces 5 ZIP codes within roughly 10 miles and 6 more in O'Brien County, so 51009 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 51009, Calumet, 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
164
Population
0.6
Area (sq mi)
268
People / sq mi
Chicago
Time Zone
standard
ZIP Type
Who lives in ZIP 51009?
38.3
Median Age
50.4%
Male
49.6%
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?
$58,750
Median Household Income
-23% vs state ZIP avg
$38,419
Per Capita Income
14.2%
Poverty Rate
2.3%
Unemployment Rate
How ZIP 51009 ranks among Iowa ZIPs
Calumet, 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)
$58,750 15th percentile higher than 15% 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
57housing units
57
Total Housing Units
50
Occupied Units
7
Vacant Units
2.26
Avg Household Size
Occupancy Type
$83,300
Median Home Value
-53% vs state ZIP avg
1944
Median Year Built
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What businesses operate in this ZIP?
Census Bureau data shows 5 business establishments in ZIP 51009, employing approximately 28 people with a combined annual payroll of $2,082,000.
5
Businesses
28
Employees
$2.1M
Annual Payroll
0
Industry Sectors
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 51009 vs 51029 →
ZIP 51009 vs its nearest neighbors, by population
Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 51046
Paullina (51046)
1,660 residents
- 51245
Primghar (51245)
1,359 residents
- 51058
Sutherland (51058)
1,007 residents
- 51037 322
Meriden (51037)
322 residents
- 51029 251
Larrabee (51029)
251 residents
- 51009 164
Calumet (51009)
164 residents
What this shows Among its immediate neighbors, ZIP 51009 ranks #6 by population - useful context the national average alone can't give.
ZIP 51009 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 51029
Larrabee (51029)
$86,042 median income
- 51046
Paullina (51046)
$84,125 median income
- 51245
Primghar (51245)
$69,531 median income
- 51058
Sutherland (51058)
$63,036 median income
- 51037
Meriden (51037)
$58,958 median income
- 51009
Calumet (51009)
$58,750 median income
What this shows By household income, ZIP 51009 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 51009, 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 O'Brien County
Related Areas
Frequently Asked Questions
What county is ZIP code 51009 in?
ZIP code 51009 (Calumet) is located in O'Brien County, Iowa. O'Brien County contains multiple ZIP codes, see the full list at /counties/obrien-ia.
What is the population of ZIP code 51009?
ZIP code 51009 in Calumet, IA has a population of 164 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 51009?
The median household income in ZIP 51009 is $58,750, which is 23% below the national average of $76,288.
What is the average home value in ZIP 51009?
The median home value in ZIP 51009 is $83,300, which is 70% below the national average of $278,155.
What is the demographic makeup of ZIP 51009?
The largest racial group in ZIP 51009 is White at 93.8%. Hispanic or Latino residents make up 0.9% of the population.
How many businesses are in ZIP code 51009?
ZIP code 51009 has 5 business establishments employing approximately 28 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What is the education level in ZIP code 51009?
In ZIP code 51009, 64.5% of residents aged 25+ have a high school diploma or higher, and 21.1% 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 51009?
In ZIP code 51009, approximately 96.0% of occupied housing units are owner-occupied and 4.0% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 51009?
The poverty rate in ZIP code 51009 is 14.2% 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 51009's numbers, next.
- See how ZIP 51009 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Calumet, 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.