Smithland, IA · standard
ZIP Code 51056
Woodbury County, Iowa - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 478
- 5/sq mi Low-density area
- $103,313
- Median income Above-median income area
- $157,400
- Median home value Below-median home value
- 22.2%
- Bachelor's or higher Near-average bachelor's attainment
National ZIP placement
Smithland pairs an upper-quartile household income with below-median home values, in a rural, homeowner-dominated area.
- Top 17%
- household income, US ZIPs
- 28th pct
- home value, US ZIPs
- 5
- people per sq mi
- 93%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 51056 against every reporting US ZIP.
ZIP code 51056 is a sparsely populated ZIP (a standard USPS delivery area) in Smithland, Woodbury County, Iowa, home to just 478 residents across 88.5 square miles, a density of 5 people per square mile, in the Chicago time zone.
ZIP 51056 lands in the middle-income range, with a median household income of $103,313 (35% above the average Iowa ZIP), while per-capita income is $49,630. The poverty rate is 12.4%, with unemployment at 0.9%; those measures add context to the income figure. Median home value is $157,400 (10% below the average Iowa ZIP) and median rent is $658; 92.5% of occupied homes are owner-occupied.
Educational attainment sits below the national norm: 22.2% of adults hold a bachelor's degree or higher, the median age is 54.7, and the average commute is -. The page also surfaces 5 ZIP codes within roughly 10 miles and 6 more in Woodbury County, so 51056 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 51056, Smithland, 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
478
Population
88.5
Area (sq mi)
5
People / sq mi
Chicago
Time Zone
standard
ZIP Type
Who lives in ZIP 51056?
54.7
Median Age
49.1%
Male
50.9%
Female
0.9%
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?
$103,313
Median Household Income
+35% vs state ZIP avg
$49,630
Per Capita Income
12.4%
Poverty Rate
0.9%
Unemployment Rate
How ZIP 51056 ranks among Iowa ZIPs
Smithland, 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)
$103,313 Top 10% higher than 90% 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
190housing units
190
Total Housing Units
173
Occupied Units
17
Vacant Units
2.00
Avg Household Size
Occupancy Type
$157,400
Median Home Value
-10% vs state ZIP avg
$658
Median Rent
1952
Median Year Built
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What businesses operate in this ZIP?
Census Bureau data shows 8 business establishments in ZIP 51056, employing approximately 42 people with a combined annual payroll of $1,870,000.
8
Businesses
42
Employees
$1.9M
Annual Payroll
1
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Retail trade | 3 | 37.5% |
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 51056 vs 51051 →
ZIP 51056 vs its nearest neighbors, by population
Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 51004
Anthon (51004)
1,033 residents
- 51026
Hornick (51026)
862 residents
- 51056
Smithland (51056)
478 residents
- 51010
Castana (51010)
456 residents
- 51044 253
Oto (51044)
253 residents
- 51051 90
Rodney (51051)
90 residents
What this shows Among its immediate neighbors, ZIP 51056 ranks #3 by population - useful context the national average alone can't give.
ZIP 51056 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 51056
Smithland (51056)
$103,313 median income
- 51044
Oto (51044)
$90,417 median income
- 51010
Castana (51010)
$89,063 median income
- 51026
Hornick (51026)
$80,500 median income
- 51051
Rodney (51051)
$51,563 median income
- 51004
Anthon (51004)
$43,882 median income
What this shows By household income, ZIP 51056 ranks the highest 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 51056, 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 Woodbury County
Related Areas
Frequently Asked Questions
What county is ZIP code 51056 in?
ZIP code 51056 (Smithland) is located in Woodbury County, Iowa. Woodbury County contains multiple ZIP codes, see the full list at /counties/woodbury-ia.
What is the population of ZIP code 51056?
ZIP code 51056 in Smithland, IA has a population of 478 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 51056?
The median household income in ZIP 51056 is $103,313, which is 35% above the national average of $76,288.
What is the average home value in ZIP 51056?
The median home value in ZIP 51056 is $157,400, which is 43% below the national average of $278,155.
What is the demographic makeup of ZIP 51056?
The largest racial group in ZIP 51056 is White at 89.3%. Hispanic or Latino residents make up 3.2% of the population.
How many businesses are in ZIP code 51056?
ZIP code 51056 has 8 business establishments employing approximately 42 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What is the education level in ZIP code 51056?
In ZIP code 51056, 61.1% of residents aged 25+ have a high school diploma or higher, and 22.2% 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 51056?
In ZIP code 51056, approximately 92.5% of occupied housing units are owner-occupied and 7.5% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 51056?
The poverty rate in ZIP code 51056 is 12.4% 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 51056's numbers, next.
- See how ZIP 51056 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Smithland, 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.