50240 ZIP Code — Saint Charles, IA

Madison County, Iowa

ZIP code 50240 is located in Saint Charles, Iowa, within Madison County. It covers approximately 75.29 square miles and serves a population of 2,335 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 641.

About ZIP code 50240

The housing stock consists of predominantly single-family detached homes. Most homes were built in the 1970s, giving the area an established character. Median home value is $253,500. Owner-occupancy is high at 84%, well above the national average.

Median household income is $98,750. The poverty rate of 4% is below the national average. 39% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with construction as the leading industry. The average commute of 30 minutes is near the national average.

Educational attainment is near the national average, with 27% of residents holding a bachelor's degree or higher.

Overall, ZIP code 50240 reflects a community defined by high homeownership and a significant Social Security-dependent population.

2,335

population

75.29

sq mi land

Standard

ZIP type

Central (CT)

timezone

50240 ZIP code map

Cities in ZIP code 50240

Below are the cities the US Postal Service accepts for ZIP code 50240. Using any city not on this list may result in mail delivery delays.

City	Status
Saint Charles	Acceptable
Saint Charles	Preferred

Nearby ZIP codes

50229 Prole (5 mi) 50160 Martensdale (6.3 mi) 50257 Truro (8.2 mi) 50210 New Virginia (10.5 mi) 50125 Indianola (11.9 mi) 50211 Norwalk (12.3 mi) 50273 Winterset (12.6 mi) 50061 Cumming (12.7 mi) 50261 Van Meter (13.6 mi) 50038 Booneville (16.5 mi) 50982 Des Moines (17.1 mi) 50149 Lorimor (17.4 mi)

Demographics updated 05/2026

Population
Total population	2,335
Population density	31 / sq mi
State FIPS	19
County FIPS	121

Geography
Land area	75.29 sq mi
Water area	0.24 sq mi
Latitude	41.2954
Longitude	-93.8096
Timezone	Central (CT)
Area code	641

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	17.3%	34.4%	40.1%
$50k – $100k	41.8%	34.4%	33.4%
$100k – $200k	33.9%	25.7%	21.5%
Over $200k	7.0%	5.5%	5.0%

Demographics & statistics

2,335

Population

People per sq mi

48.0

Median age

$98,750

Median household income

$47,443

Per capita income

$253,500

Median home value

$920

Median monthly rent

84.1%

Home ownership

4.3%

Poverty rate

1.2%

Unemployment

820

Housing units

26.6%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

15–19

20–24

167

25–34

168

35–44

198

45–54

201

55–59

60–64

163

65–74

164

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	368	15.8%
18 and over	1,967	84.2%
65 and over	495	21.2%
Median age	48.0 years

Race & ethnicity

White 90.7%

Hispanic or Latino 3.9%

Two or more races 3.1%

Other race 2.3%

Group	Count	%
White	2,202	90.7%
Hispanic or Latino	94	3.9%
Two or more races	76	3.1%
Other race	57	2.3%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	17.3%	34.4%	40.1%
$50k – $100k	41.8%	34.4%	33.4%
$100k – $200k	33.9%	25.7%	21.5%
Over $200k	7.0%	5.5%	5.0%

Under $10k 0.2%

$10k–$15k 0.7%

$15k–$25k 3.1%

$25k–$35k 0.4%

$35k–$50k 6.7%

$50k–$75k 20.2%

$75k–$100k 19.4%

$100k–$150k 30.6%

$150k–$200k 12.1%

$200k+ 6.5%

Range	% of households
Under $10k	0.2%
$10k–$15k	0.7%
$15k–$25k	3.1%
$25k–$35k	0.4%
$35k–$50k	6.7%
$50k–$75k	20.2%
$75k–$100k	19.4%
$100k–$150k	30.6%
$150k–$200k	12.1%
$200k+	6.5%
Median income	$98,750

Housing

Home values

Under $50k 1.6%

$50k–$100k 0.8%

$100k–$150k 10.4%

$150k–$200k 14.9%

$200k–$300k 43.4%

$300k–$500k 18.2%

$500k–$1M 5.9%

$1M+ 4.7%

Housing overview

Metric	Value
Median home value	$253,500
Median rent / month	$920
Owner occupied	84.1%
Renter occupied	15.9%
Vacant	6.4%
Single-family detached	92.7%
Large apartment buildings	0.0%
Mobile homes	0.7%
Median rooms	6.2
Avg household size (owned)	2.58

Year built

Era	%
2020 or later	0.0%
2010–2019	8.6%
2000–2009	15.6%
1990–1999	15.5%
1980–1989	6.4%
1970–1979	21.7%
1960–1969	6.5%
1950–1959	6.9%
1940–1949	1.9%
1939 or earlier	16.9%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	7.7%
2 bedrooms	22.0%
3 bedrooms	49.3%
4 bedrooms	15.0%
5+ bedrooms	6.0%

Vehicles per household

Vehicles	% of households
No vehicle	1.0%
1 vehicle	7.7%
2 vehicles	38.4%
3 or more	52.9%

Heating fuel

Fuel type	%
Utility gas	33.3%
Electricity	16.4%
Propane / LP gas	43.6%
Wood	6.2%
No fuel used	0.4%

Households & families

Household type	Count	%
Married-couple family	645	71.6%
Cohabiting couple	101	11.2%
Male householder, no spouse	74	8.2%
Female householder, no spouse	81	9.0%
Households with children under 18	217	24.1%
Households with seniors (65+)	322	35.7%
Average household size	2.59

Marital status

Status	Male	Female
Never married	24.2%	22.6%
Married	66.1%	63.2%
Separated	0.3%	3.1%
Widowed	3.5%	2.6%
Divorced	5.9%	8.5%

Education

Less than 9th grade 0.1%

Some HS, no diploma 2.2%

HS graduate 32.7%

Some college, no degree 24.2%

Associate's degree 14.2%

Bachelor's degree 20.6%

Graduate / professional 6.1%

Metric	%
HS diploma or higher	97.7%
Bachelor's or higher	26.6%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	10	2.9%
Kindergarten	22	6.3%
Elementary school	104	29.8%
High school	144	41.3%
College / grad school	69	19.8%

Employment

Industry of employment

Construction 18.3%

Education & healthcare 17.8%

Finance & real estate 14.9%

Retail trade 11.6%

Transportation & utilities 10.2%

Other services 7.9%

Professional & management 7.2%

Manufacturing 5.0%

Public administration 3.1%

Wholesale trade 1.5%

Arts, food & hospitality 1.2%

Information 1.0%

Agriculture & mining 0.3%

Occupation

Category	%
Management, business & arts	32.3%
Service	17.0%
Sales & office	15.7%
Natural resources & construction	22.8%
Production & transportation	12.2%

Employment type

Type	%
Private sector	79.6%
Government	15.9%
Self-employed	4.5%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	82.8%
Carpool	2.8%
Public transit	0.4%
Walk	0.3%
Work from home	13.0%
Other means	0.7%
Avg commute (minutes)	29.8

Poverty

All people 4.3%

Under 18 years 5.0%

18 and over 4.2%

Married-couple families 0.9%

Female-led households 0.0%

Income support

Source	% of households
Social Security	39.4%
Retirement income	37.1%
Supplemental Security	4.2%
Cash public assistance	2.3%
Food stamps / SNAP	0.8%

Health indicators

Condition	%
Obesity	35.4%
High blood pressure	30.2%
High cholesterol	32.3%
Diabetes	8.7%
Heart disease	5.6%
Stroke	2.5%
Asthma	8.9%
Arthritis	23.7%
Kidney disease	2.4%
Pulmonary disease	5.6%
Cancer	6.7%

Behavior / access	%
Smoking	15.9%
Binge drinking	23.1%
No physical activity	20.9%
Less than 7 hrs sleep	28.6%
Depression	17.3%
Fair or poor health	10.3%
Poor mental health	12.6%
Poor physical health	8.4%
No health insurance	8.1%
Visited doctor (checkup)	75.2%
Visited dentist	69.5%
Cholesterol screening	89.9%
Teeth loss	10.6%

Veterans & disability

Veterans	Count	%
Civilian veterans	121	6.2%

Disability	%
Any disability	7.9%
Under 18	0.8%
18–64 years	6.2%
65 and over	18.0%

Health insurance coverage

Type	%
Private insurance	79.2%
Public insurance	34.6%
No insurance	4.4%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	2,227	95.4%
Spanish	0	0.0%
Other Indo-European	0	0.0%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	2,285	97.9%
Born in same state	2,266	97.0%
Born in different state	1,981	84.8%
Foreign born	19	0.8%
Naturalized citizen	50	2.1%
Not a US citizen	16	32.0%

Ancestry

Ancestry	Count	%
Italian	412	17.6%
French	329	14.1%
Arab	298	12.8%

Ancestry	Count	%
Dutch	52	2.2%
Polish	44	1.9%
English	41	1.8%

Technology access

Metric	% of households
Computer access	38.6%
Internet access	96.4%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions about ZIP code 50240

What city is ZIP code 50240 in?

ZIP code 50240 is primarily assigned to Saint Charles, Iowa.

What county is ZIP code 50240 in?

ZIP code 50240 falls within Madison County, Iowa.

Is ZIP code 50240 mostly owner-occupied?

84% of occupied units in ZIP code 50240 are owner-occupied, well above the national average.

Does ZIP code 50240 have a large retiree population?

39% of households in ZIP code 50240 receive Social Security income, suggesting a significant retiree or disability population.

What is the population of ZIP code 50240?

ZIP code 50240 has an estimated population of 2,335 residents, with a density of 31 people per square mile.

What is the median household income in ZIP code 50240?

The median household income in ZIP code 50240 is $98,750, above the national median of ~$75,000.

What timezone is ZIP code 50240 in?

ZIP code 50240 observes the CST timezone.