50156 ZIP Code — Madrid, IA

Boone County, Iowa

ZIP code 50156 is located in Madrid, Iowa, within Boone County. It covers approximately 88.49 square miles and serves a population of 4,644 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 515.

About ZIP code 50156

The housing stock consists of predominantly single-family detached homes. Most homes were built in the pre-1940, giving the area an established character. Median home value is $207,900. Owner-occupancy is high at 86%, well above the national average.

Median household income is $88,661. 41% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 26 minutes is near the national average.

Educational attainment is near the national average, with 26% of residents holding a bachelor's degree or higher.

Overall, ZIP code 50156 reflects a community defined by high homeownership and a significant Social Security-dependent population.

4,644

population

88.49

sq mi land

Standard

ZIP type

Central (CT)

timezone

50156 ZIP code map

Cities in ZIP code 50156

Below are the cities the US Postal Service accepts for ZIP code 50156. Using any city not on this list may result in mail delivery delays.

City	Status
Madrid	Acceptable
Madrid	Preferred

Nearby ZIP codes

50244 Slater (7.8 mi) 50276 Woodward (7.8 mi) 50226 Polk City (8.3 mi) 50109 Granger (9.1 mi) 50124 Huxley (9.6 mi) 50039 Bouton (11.5 mi) 50007 Alleman (11.8 mi) 50013 Ames (12.1 mi) 50011 Ames (12.3 mi) 50014 Ames (13 mi) 50131 Johnston (13.1 mi) 50012 Ames (13.4 mi)

Demographics updated 06/2026

Population
Total population	4,644
Population density	52 / sq mi
State FIPS	19
County FIPS	015

Geography
Land area	88.49 sq mi
Water area	1.71 sq mi
Latitude	41.8945
Longitude	-93.8006
Timezone	Central (CT)
Area code	515

Total population by age

Gender

Race & ethnicity

Economics updated 06/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	33.9%	36.7%	40.1%
$50k – $100k	30.8%	34.8%	33.4%
$100k – $200k	32.4%	24.3%	21.5%
Over $200k	3.0%	4.2%	5.0%

Demographics & statistics

4,644

Population

People per sq mi

46.6

Median age

$88,661

Median household income

$41,523

Per capita income

$207,900

Median home value

$868

Median monthly rent

85.5%

Home ownership

9.0%

Poverty rate

0.7%

Unemployment

1,739

Housing units

25.5%

Bachelor's or higher

Age distribution

Male Female

Under 5

159

5–9

172

102

10–14

111

104

15–19

113

20–24

283

25–34

306

253

35–44

272

239

45–54

258

168

55–59

181

249

60–64

269

322

65–74

347

102

75–84

111

85+

100

← Male

Female →

Age summary

Group	Count	%
Under 18	882	19.0%
18 and over	3,762	81.0%
65 and over	1,074	23.1%
Median age	46.6 years

Race & ethnicity

White 96.7%

Two or more races 1.6%

Hispanic or Latino 1.6%

Black or African American 0.1%

Group	Count	%
White	4,560	96.7%
Two or more races	77	1.6%
Hispanic or Latino	74	1.6%
Black or African American	7	0.1%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	33.9%	36.7%	40.1%
$50k – $100k	30.8%	34.8%	33.4%
$100k – $200k	32.4%	24.3%	21.5%
Over $200k	3.0%	4.2%	5.0%

Under $10k 3.2%

$10k–$15k 1.3%

$15k–$25k 6.1%

$25k–$35k 5.0%

$35k–$50k 10.2%

$50k–$75k 17.4%

$75k–$100k 17.8%

$100k–$150k 25.1%

$150k–$200k 6.9%

$200k+ 6.9%

Range	% of households
Under $10k	3.2%
$10k–$15k	1.3%
$15k–$25k	6.1%
$25k–$35k	5.0%
$35k–$50k	10.2%
$50k–$75k	17.4%
$75k–$100k	17.8%
$100k–$150k	25.1%
$150k–$200k	6.9%
$200k+	6.9%
Median income	$88,661

Housing

Home values

Under $50k 2.3%

$50k–$100k 6.1%

$100k–$150k 18.2%

$150k–$200k 19.4%

$200k–$300k 32.7%

$300k–$500k 13.7%

$500k–$1M 5.7%

$1M+ 1.9%

Housing overview

Metric	Value
Median home value	$207,900
Median rent / month	$868
Owner occupied	85.5%
Renter occupied	14.5%
Vacant	5.7%
Single-family detached	85.8%
Large apartment buildings	3.9%
Mobile homes	2.3%
Median rooms	6.1
Avg household size (owned)	2.48

Year built

Era	%
2020 or later	0.0%
2010–2019	6.4%
2000–2009	9.3%
1990–1999	9.6%
1980–1989	5.5%
1970–1979	16.8%
1960–1969	10.3%
1950–1959	7.9%
1940–1949	2.7%
1939 or earlier	31.5%

Bedrooms

Size	% of units
No bedroom (studio)	0.7%
1 bedroom	7.5%
2 bedrooms	21.5%
3 bedrooms	40.6%
4 bedrooms	26.9%
5+ bedrooms	2.6%

Vehicles per household

Vehicles	% of households
No vehicle	1.4%
1 vehicle	24.5%
2 vehicles	28.2%
3 or more	46.0%

Heating fuel

Fuel type	%
Utility gas	53.0%
Electricity	22.7%
Propane / LP gas	23.5%
Solar	0.2%

Households & families

Household type	Count	%
Married-couple family	1,075	56.5%
Cohabiting couple	200	10.5%
Male householder, no spouse	262	13.8%
Female householder, no spouse	364	19.1%
Households with children under 18	512	26.9%
Households with seniors (65+)	716	37.7%
Average household size	2.40

Marital status

Status	Male	Female
Never married	29.0%	19.5%
Married	55.8%	57.2%
Separated	0.8%	0.0%
Widowed	3.6%	10.4%
Divorced	10.8%	12.9%

Education

Less than 9th grade 3.0%

Some HS, no diploma 6.2%

HS graduate 28.8%

Some college, no degree 21.2%

Associate's degree 15.3%

Bachelor's degree 18.6%

Graduate / professional 6.9%

Metric	%
HS diploma or higher	90.8%
Bachelor's or higher	25.5%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	36	4.9%
Kindergarten	68	9.3%
Elementary school	386	52.7%
High school	182	24.8%
College / grad school	61	8.3%

Employment

Industry of employment

Education & healthcare 20.7%

Retail trade 15.6%

Finance & real estate 14.0%

Construction 10.3%

Professional & management 8.6%

Manufacturing 7.6%

Public administration 4.7%

Transportation & utilities 4.6%

Agriculture & mining 4.0%

Wholesale trade 4.0%

Other services 3.9%

Information 1.8%

Arts, food & hospitality 0.1%

Occupation

Category	%
Management, business & arts	37.5%
Service	12.2%
Sales & office	25.2%
Natural resources & construction	13.3%
Production & transportation	11.8%

Employment type

Type	%
Private sector	77.0%
Government	16.9%
Self-employed	5.8%
Unpaid family workers	0.3%

Commute

Method	%
Drive alone	80.9%
Carpool	8.7%
Public transit	0.1%
Walk	0.8%
Work from home	9.3%
Other means	0.3%
Avg commute (minutes)	25.9

Poverty

All people 9.0%

Under 18 years 15.8%

18 and over 7.5%

Married-couple families 2.6%

Female-led households 22.4%

Income support

Source	% of households
Social Security	40.9%
Retirement income	34.9%
Supplemental Security	5.2%
Cash public assistance	0.9%
Food stamps / SNAP	2.6%

Health indicators

Condition	%
Obesity	37.0%
High blood pressure	32.7%
High cholesterol	33.1%
Diabetes	9.6%
Heart disease	6.5%
Stroke	2.9%
Asthma	9.0%
Arthritis	25.4%
Kidney disease	2.8%
Pulmonary disease	6.1%
Cancer	7.6%

Behavior / access	%
Smoking	15.7%
Binge drinking	21.6%
No physical activity	22.4%
Less than 7 hrs sleep	28.9%
Depression	17.3%
Fair or poor health	11.3%
Poor mental health	12.6%
Poor physical health	8.8%
No health insurance	7.8%
Visited doctor (checkup)	75.6%
Visited dentist	68.6%
Cholesterol screening	90.1%
Teeth loss	11.4%

Veterans & disability

Veterans	Count	%
Civilian veterans	268	7.1%

Disability	%
Any disability	12.3%
Under 18	8.0%
18–64 years	7.6%
65 and over	29.0%

Health insurance coverage

Type	%
Private insurance	81.7%
Public insurance	37.1%
No insurance	3.8%
Uninsured under 19	1.1%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	4,483	96.5%
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)	4,638	99.9%
Born in same state	4,604	99.1%
Born in different state	3,955	85.2%
Foreign born	34	0.7%
Naturalized citizen	6	0.1%
Not a US citizen	6	100.0%

Ancestry

Ancestry	Count	%
Italian	725	15.6%
French	577	12.4%
Polish	305	6.6%
Arab	169	3.6%

Ancestry	Count	%
English	117	2.5%
Dutch	32	0.7%
Norwegian	25	0.5%
German	21	0.5%

Technology access

Metric	% of households
Computer access	40.9%
Internet access	95.8%

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

Frequently asked questions about ZIP code 50156

What city is ZIP code 50156 in?

ZIP code 50156 is primarily assigned to Madrid, Iowa.

What county is ZIP code 50156 in?

ZIP code 50156 falls within Boone County, Iowa.

Is ZIP code 50156 mostly owner-occupied?

86% of occupied units in ZIP code 50156 are owner-occupied, well above the national average.

Does ZIP code 50156 have a large retiree population?

41% of households in ZIP code 50156 receive Social Security income, suggesting a significant retiree or disability population.

What is the population of ZIP code 50156?

ZIP code 50156 has an estimated population of 4,644 residents, with a density of 52 people per square mile.

What is the typical home value in ZIP code 50156?

The median home value in ZIP code 50156 is $207,900.

What timezone is ZIP code 50156 in?

ZIP code 50156 observes the CST timezone.