PlainZIP

Grafton, IA · standard

ZIP Code 50440

Worth County, Iowa - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.

422
5/sq mi
$76,429
Median income
$122,500
Median home value
16.3%
Bachelor's or higher

The verdict

Grafton pairs an above-median household income with among the most affordable home values nationally, in a rural, homeowner-dominated area.

Top 43%
household income, US ZIPs
18th pct
home value, US ZIPs
5
people per sq mi
75%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 50440 against every reporting US ZIP.

ZIP code 50440 is a sparsely populated ZIP (a standard USPS delivery area) in Grafton, Worth County, Iowa, home to just 422 residents across 81.2 square miles, a density of 5 people per square mile, in the Chicago time zone.

ZIP 50440 lands in the middle-income range, with a median household income of $76,429 (0% below the Iowa average), while per-capita income is $37,745. The poverty rate stands at 7.5% and the unemployment rate at 4.1%. Housing costs here run $122,500 for a typical home value (30% below the state average), with rent averaging $638 a month; 74.7% of homes are owner-occupied.

Educational attainment sits below the national norm: 16.3% of adults hold a bachelor's degree or higher, the median age is 56.2, and the average commute is -. We also surface 5 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing Worth County, so you can benchmark 50440 against its immediate geography rather than a national average alone.

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 50440, Grafton, 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

422

Population

81.2

Area (sq mi)

5

People / sq mi

Chicago

Time Zone

standard

ZIP Type

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 50440?

56.2

Median Age

56.0%

Male

44.0%

Female

0.6%

Foreign-Born

White 96.4%
African American 1.1%
Asian 0.0%
American Indian or Alaska Native 0.0%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 2.5%
Hispanic or Latino 2.5%

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?

$76,429

Median Household Income

-0% vs state

$37,745

Per Capita Income

7.5%

Poverty Rate

4.1%

Unemployment Rate

How ZIP 50440 ranks nationally

Grafton, IA household income vs. every US ZIP code

Median household income, the full national distribution, with this ZIP marked

$76,429 Top 43% higher than 57% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). Below this entry. $60,000–$80,000: 9,980 US ZIPs (33%). This entry sits in this band. $80,000–$100,000: 5,778 US ZIPs (19%). Above this entry. $100,000–$120,000: 2,855 US ZIPs (9%). Above this entry. $120,000–$140,000: 1,362 US ZIPs (4%). Above this entry. $140,000–$160,000: 686 US ZIPs (2%). Above this entry. $160,000–$180,000: 364 US ZIPs (1%). Above this entry. $180,000–$200,000: 186 US ZIPs (1%). Above this entry. $200,000–$220,000: 324 US ZIPs (1%). Above this entry. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

Each bar is a $20K-wide band; taller bars hold more US 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?

High School Graduate or Higher 53.3%
Bachelor's Degree or Higher 16.3%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

208

Total Housing Units

186

Occupied Units

22

Vacant Units

1.94

Avg Household Size

Occupancy Type

Owner 74.7%
Renter 25.3%

$122,500

Median Home Value

-30% vs state

$638

Median Rent

1947

Median Year Built

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What businesses operate in this ZIP?

Census Bureau data shows 9 business establishments in ZIP 50440, employing approximately 25 people with a combined annual payroll of $776,000.

9

Businesses

25

Employees

$776K

Annual Payroll

1

Industry Sectors

Industry Establishments % of Total
Construction 3 33.3%

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 50440 vs 50464 →

ZIP 50440 vs its nearest neighbors, by population

Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.

residents

What this shows Among its immediate neighbors, ZIP 50440 ranks #4 by population - useful context the national average alone can't give.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023

ZIP 50440 vs its nearest neighbors, by median income

Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.

median income

What this shows By household income, ZIP 50440 ranks #4 of 6 neighboring ZIPs, local affluence varies block to block, not just metro to metro.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023
ZIP Code City Population Distance
50464 Plymouth, IA 673 5.4 mi
50467 Rock Falls, IA 94 8.3 mi
50426 Carpenter, IA 56 6.4 mi
50456 Manly, IA 1,741 7.9 mi
50472 Saint Ansgar, IA 2,394 8.9 mi

More ZIP Codes in Worth County

50459 standard
Northwood, IA
Pop: 3,018
50456 standard
Manly, IA
Pop: 1,741
50448 standard
Kensett, IA
Pop: 695
50446 standard
Joice, IA
Pop: 548
50434 standard
Fertile, IA
Pop: 498
50444 standard
Hanlontown, IA
Pop: 353

Related Areas

Worth County Grafton, IA Iowa

Frequently Asked Questions

What county is ZIP code 50440 in? ▼
ZIP code 50440 (Grafton) is located in Worth County, Iowa. Worth County contains multiple ZIP codes, see the full list at /counties/worth-ia.
What is the population of ZIP code 50440? ▼
ZIP code 50440 in Grafton, IA has a population of 422 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 50440? ▼
The median household income in ZIP 50440 is $76,429, which is 0% above the national average of $76,288.
What is the average home value in ZIP 50440? ▼
The median home value in ZIP 50440 is $122,500, which is 56% below the national average of $278,155.
What is the demographic makeup of ZIP 50440? ▼
The largest racial group in ZIP 50440 is White at 96.4%. Hispanic or Latino residents make up 2.5% of the population.
How many businesses are in ZIP code 50440? ▼
ZIP code 50440 has 9 business establishments employing approximately 25 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What is the education level in ZIP code 50440? ▼
In ZIP code 50440, 53.3% of residents aged 25+ have a high school diploma or higher, and 16.3% 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 50440? ▼
In ZIP code 50440, approximately 74.7% of occupied housing units are owner-occupied and 25.3% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 50440? ▼
The poverty rate in ZIP code 50440 is 7.5% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.

Read our methodology to see how this data is sourced, computed, and verified.