PlainZIP

Saint Charles, IA · standard

ZIP Code 50240

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

2,453
12/sq mi
$107,563
Median income
$305,800
Median home value
30.5%
Bachelor's or higher

The verdict

Saint Charles pairs an upper-quartile household income with above-median home values, in a rural, homeowner-dominated area.

Top 15%
household income, US ZIPs
Top 33%
home value, US ZIPs
12
people per sq mi
87%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 50240 against every reporting US ZIP.

ZIP code 50240 is classified by USPS as a standard delivery area and covers roughly 197.8 square miles in Saint Charles, Madison County, Iowa. The area is home to 2,453 residents, producing a population density of 12 people per square mile, and falls within the Chicago time zone. These USPS and Census boundary values drive every downstream statistic on this page, including the benchmarks that compare 50240 against Iowa and the nation.

On the economic side, the median household income for ZIP 50240 sits at $107,563 (40% above the Iowa average), while per-capita income is $45,732. The poverty rate stands at 4.4% and the unemployment rate at 2.1%. On housing, the median home value is $305,800 (74% above the state average) with median rent at $855 per month, and 86.8% of occupied units are owner-occupied, a direct signal of whether 50240 behaves more like a homeowner neighborhood or a renter-heavy ZIP.

Education and household profile round out the picture: 30.5% of adults hold a bachelor's degree or higher, the median age is 43.6, and the average commute is 33 minutes. We also surface 6 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing Madison County, so you can benchmark 50240 against its immediate geography rather than a national average alone. Every figure is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates, HUD Fair Market Rents, and FHFA Home Price Index data, no estimates, no proprietary scoring. Verify with HUD →

Top industries in ZIP 50240

Top 5 sectors by establishment count

Which industries have the most business establishments in ZIP 50240.

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 · ZIP Code Business Patterns (ZBP) As of 2023

Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + HUD FMR + FHFA HPI ACS demographics, ZBP business establishments, HUD Fair Market Rents, FHFA HPI for ZIP 50240, Saint Charles, IA · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; HUD FMR + FHFA HPI updated quarterly/annually.

Quick Facts

2,453

Population

197.8

Area (sq mi)

12

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 50240?

43.6

Median Age

50.3%

Male

49.7%

Female

2.5%

Foreign-Born

White 90.1%
African American 0.0%
Asian 0.0%
American Indian or Alaska Native 0.0%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 6.8%
Hispanic or Latino 7.7%

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?

$107,563

Median Household Income

+40% vs state

$45,732

Per Capita Income

4.4%

Poverty Rate

2.1%

Unemployment Rate

32.8 min

Mean Commute Time

How ZIP 50240 ranks nationally

Household income vs. every US ZIP code

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

$107,563 Top 15% higher than 85% 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%). Below this entry. $80,000–$100,000: 5,778 US ZIPs (19%). Below this entry. $100,000–$120,000: 2,855 US ZIPs (9%). This entry sits in this band. $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 60.1%
Bachelor's Degree or Higher 30.5%

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

What does housing look like?

915

Total Housing Units

861

Occupied Units

54

Vacant Units

2.78

Avg Household Size

Occupancy Type

Owner 86.8%
Renter 13.2%

$305,800

Median Home Value

+74% vs state

$855

Median Rent

1982

Median Year Built

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

How have home values changed over time?

FHFA House Price Index, annual appreciation data based on repeat sales and appraisals

+7.4%

YoY Change (2024)

241

HPI Index (2000 = 100)

+141%

Total Change Since 2000

Home values in ZIP 50240 have increased 7.4% over the past year (2024). Since 2000, this ZIP has seen +141% cumulative appreciation.

Year Annual Change HPI Index
2020 +1.0% 155
2021 +9.0% 169
2022 +24.6% 211
2023 +6.6% 225
2024 +7.4% 241

Source: Federal Housing Finance Agency (FHFA) House Price Index, All-Transactions, Five-Digit ZIP Codes (Developmental Index). Index base = 100 in year 2000. Data through 2024. ZIP codes with few transactions may show missing values.

What businesses operate in this ZIP?

Census Bureau data shows 44 business establishments in ZIP 50240, employing approximately 134 people with a combined annual payroll of $5,365,000.

44

Businesses

134

Employees

$5.4M

Annual Payroll

5

Industry Sectors

Industry Establishments % of Total
Construction 14 31.8%
Retail trade 7 15.9%
Real estate and rental and leasing 6 13.6%
Administrative and support and waste management and remediation services 4 9.1%
Other services (except public administration) 3 6.8%

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 50240 vs 50033 →

ZIP 50240 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 50240 ranks the most populous — useful context the national average alone can't give.

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

ZIP 50240 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 50240 ranks #2 of 7 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
50033 Bevington, IA 44 4.7 mi
50229 Prole, IA 932 5.7 mi
50160 Martensdale, IA 465 6.2 mi
50218 Patterson, IA 139 5.8 mi
50257 Truro, IA 992 7.8 mi
50210 New Virginia, IA 1,691 8.9 mi

More ZIP Codes in Madison County

50273 standard
Winterset, IA
Pop: 8,251
50072 standard
Earlham, IA
Pop: 2,671
50257 standard
Truro, IA
Pop: 992
50222 standard
Peru, IA
Pop: 498
50155 standard
Macksburg, IA
Pop: 255
50218 standard
Patterson, IA
Pop: 139

Related Areas

Madison County Saint Charles, IA Iowa

Frequently Asked Questions

What county is ZIP code 50240 in? ▼
ZIP code 50240 (Saint Charles) is located in Madison County, Iowa. Madison County contains multiple ZIP codes, see the full list at /counties/madison-ia.
What is the population of ZIP code 50240? ▼
ZIP code 50240 in Saint Charles, IA has a population of 2,453 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 50240? ▼
The median household income in ZIP 50240 is $107,563, which is 41% above the national average of $76,288.
What is the average home value in ZIP 50240? ▼
The median home value in ZIP 50240 is $305,800, which is 10% above the national average of $278,155.
What is the demographic makeup of ZIP 50240? ▼
The largest racial group in ZIP 50240 is White at 90.1%. Hispanic or Latino residents make up 7.7% of the population.
How many businesses are in ZIP code 50240? ▼
ZIP code 50240 has 44 business establishments employing approximately 134 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 50240? ▼
The top industries by establishment count in ZIP 50240 are: Construction (14), Retail trade (7), Real estate and rental and leasing (6). There are 5 industry sectors represented in total.
How have home values changed in ZIP code 50240? ▼
According to the FHFA House Price Index, home values in ZIP 50240 increased by 7.4% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 141%. This is a developmental index based on repeat sales and appraisal data from Fannie Mae and Freddie Mac.
What is the education level in ZIP code 50240? ▼
In ZIP code 50240, 60.1% of residents aged 25+ have a high school diploma or higher, and 30.5% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What is the average commute time in ZIP 50240? ▼
The mean commute time for workers in ZIP code 50240 is 32.8 minutes according to Census ACS data. The national average is roughly 26 minutes, so commuters here spend more time traveling to work than typical.
What percentage of residents own vs. rent in ZIP 50240? ▼
In ZIP code 50240, approximately 86.8% of occupied housing units are owner-occupied and 13.2% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 50240? ▼
The poverty rate in ZIP code 50240 is 4.4% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.

ZIP Code Research Guides

Reading Census Demographics
How to interpret population, income, and education data from the Census Bureau.
Understanding ZIP Code Data
What ZIP codes are, how ZCTAs differ, and what the data reveals.
Best ZIP Codes for Families
Key factors to evaluate when choosing a family-friendly neighborhood.
ZIP Codes for Relocation
Data-driven tips for evaluating ZIP codes before a move.

Official Data Resources for Saint Charles, IA

Verify and explore additional data for this area using these official government sources.

U.S. Census Bureau
Official demographic, economic, and housing data from the American Community Survey.
HUD Fair Market Rents
Department of Housing and Urban Development rental cost estimates by metropolitan area.
FBI Uniform Crime Reports
Official crime statistics compiled from law enforcement agencies nationwide.
FHFA House Price Index
Federal Housing Finance Agency home value trends based on repeat sales and appraisals.

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