52237 ZIP Code — Hopkinton, IA

Delaware County, Iowa

ZIP code 52237 is located in Hopkinton, Iowa, within Delaware County. It covers approximately 84.12 square miles and serves a population of 1,623 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 563.

About ZIP code 52237

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 $156,500. Owner-occupancy is high at 86%, well above the national average.

Median household income is $81,796.

The dominant occupation class is management, business, and professional, with manufacturing as the leading industry. The average commute of 31 minutes is near the national average.

College attainment at 13% is below the national average, consistent with a trades and production-oriented local economy.

21% of residents lack health insurance, above the national average.

Overall, ZIP code 52237 reflects a community defined by a trades-oriented workforce and high homeownership.

1,623

population

84.12

sq mi land

Standard

ZIP type

Central (CT)

timezone

52237 ZIP code map

Cities in ZIP code 52237

Below are the cities the US Postal Service accepts for ZIP code 52237. Using any city not on this list may result in mail delivery delays.

City	Status
Hopkinton	Acceptable
Hopkinton	Preferred

Nearby ZIP codes

52223 Delhi (4.3 mi) 52078 Worthington (7.7 mi) 52310 Monticello (10.7 mi) 52330 Ryan (10.9 mi) 52040 Dyersville (12.5 mi) 52057 Manchester (12.9 mi) 52046 Farley (13.4 mi) 52033 Cascade (14.5 mi) 52218 Coggon (15.7 mi) 52050 Greeley (17 mi) 52205 Anamosa (17.1 mi) 52065 New Vienna (17.2 mi)

Demographics updated 05/2026

Population
Total population	1,623
Population density	19 / sq mi
State FIPS	19
County FIPS	055

Geography
Land area	84.12 sq mi
Water area	0.04 sq mi
Latitude	42.3647
Longitude	-91.2664
Timezone	Central (CT)
Area code	563

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	25.2%	38.3%	40.1%
$50k – $100k	59.4%	35.2%	33.4%
$100k – $200k	15.0%	23.0%	21.5%
Over $200k	0.4%	3.4%	5.0%

Demographics & statistics

1,623

Population

People per sq mi

28.0

Median age

$81,796

Median household income

$37,018

Per capita income

$156,500

Median home value

$340

Median monthly rent

85.7%

Home ownership

7.9%

Poverty rate

0.8%

Unemployment

553

Housing units

13.1%

Bachelor's or higher

Age distribution

Male Female

117

Under 5

111

5–9

10–14

15–19

20–24

125

25–34

120

112

35–44

106

45–54

55–59

60–64

65–74

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	552	34.0%
18 and over	1,071	66.0%
65 and over	178	11.0%
Median age	28.0 years

Race & ethnicity

White 98.1%

Two or more races 1%

Hispanic or Latino 0.9%

Group	Count	%
White	1,607	98.1%
Two or more races	16	1%
Hispanic or Latino	15	0.9%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	25.2%	38.3%	40.1%
$50k – $100k	59.4%	35.2%	33.4%
$100k – $200k	15.0%	23.0%	21.5%
Over $200k	0.4%	3.4%	5.0%

Under $10k 6.3%

$10k–$15k 0.9%

$15k–$25k 6.5%

$25k–$35k 2.5%

$35k–$50k 7.4%

$50k–$75k 14.1%

$75k–$100k 25.1%

$100k–$150k 21.7%

$150k–$200k 7.4%

$200k+ 8.1%

Range	% of households
Under $10k	6.3%
$10k–$15k	0.9%
$15k–$25k	6.5%
$25k–$35k	2.5%
$35k–$50k	7.4%
$50k–$75k	14.1%
$75k–$100k	25.1%
$100k–$150k	21.7%
$150k–$200k	7.4%
$200k+	8.1%
Median income	$81,796

Housing

Home values

Under $50k 9.7%

$50k–$100k 20.0%

$100k–$150k 15.8%

$150k–$200k 30.5%

$200k–$300k 14.5%

$300k–$500k 9.5%

Housing overview

Metric	Value
Median home value	$156,500
Median rent / month	$340
Owner occupied	85.7%
Renter occupied	14.3%
Vacant	12.3%
Single-family detached	88.8%
Large apartment buildings	0.0%
Mobile homes	7.8%
Median rooms	6.4
Avg household size (owned)	2.83

Year built

Era	%
2020 or later	0.0%
2010–2019	4.1%
2000–2009	6.0%
1990–1999	11.7%
1980–1989	9.2%
1970–1979	14.7%
1960–1969	3.8%
1950–1959	9.3%
1940–1949	3.6%
1939 or earlier	37.5%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	2.1%
2 bedrooms	20.3%
3 bedrooms	50.2%
4 bedrooms	20.7%
5+ bedrooms	6.8%

Vehicles per household

Vehicles	% of households
No vehicle	17.5%
1 vehicle	12.6%
2 vehicles	24.5%
3 or more	45.3%

Heating fuel

Fuel type	%
Utility gas	39.9%
Electricity	10.3%
Propane / LP gas	29.6%
Fuel oil	2.2%
Wood	18.1%

Households & families

Household type	Count	%
Married-couple family	392	70.8%
Cohabiting couple	15	2.7%
Male householder, no spouse	59	10.6%
Female householder, no spouse	88	15.9%
Households with children under 18	253	45.7%
Households with seniors (65+)	126	22.7%
Average household size	2.93

Marital status

Status	Male	Female
Never married	19.0%	18.8%
Married	74.6%	66.9%
Separated	0.0%	0.0%
Widowed	1.4%	9.9%
Divorced	5.0%	4.4%

Education

Less than 9th grade 12.9%

Some HS, no diploma 5.6%

HS graduate 40.3%

Some college, no degree 21.2%

Associate's degree 6.8%

Bachelor's degree 11.1%

Graduate / professional 2.1%

Metric	%
HS diploma or higher	81.4%
Bachelor's or higher	13.1%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	12	3.4%
Kindergarten	36	10.1%
Elementary school	192	53.8%
High school	86	24.1%
College / grad school	31	8.7%

Employment

Industry of employment

Manufacturing 25.6%

Construction 20.5%

Education & healthcare 18.2%

Other services 8.5%

Retail trade 7.3%

Wholesale trade 5.8%

Agriculture & mining 5.5%

Public administration 3.4%

Finance & real estate 2.6%

Professional & management 1.5%

Transportation & utilities 0.5%

Information 0.5%

Arts, food & hospitality 0.3%

Occupation

Category	%
Management, business & arts	33.8%
Service	9.2%
Sales & office	13.5%
Natural resources & construction	20.7%
Production & transportation	22.9%

Employment type

Type	%
Private sector	74.7%
Government	7.1%
Self-employed	15.6%
Unpaid family workers	2.6%

Commute

Method	%
Drive alone	62.9%
Carpool	21.4%
Public transit	3.9%
Walk	0.7%
Work from home	8.0%
Other means	3.1%
Avg commute (minutes)	31.3

Poverty

All people 7.9%

Under 18 years 8.7%

18 and over 7.6%

Married-couple families 3.6%

Female-led households 8.3%

Income support

Source	% of households
Social Security	30.0%
Retirement income	27.1%
Supplemental Security	1.8%
Cash public assistance	3.6%
Food stamps / SNAP	5.4%

Health indicators

Condition	%
Obesity	39.6%
High blood pressure	32.8%
High cholesterol	32.9%
Diabetes	9.8%
Heart disease	6.6%
Stroke	3.0%
Asthma	9.1%
Arthritis	24.4%
Kidney disease	2.8%
Pulmonary disease	6.8%
Cancer	7.1%

Behavior / access	%
Smoking	17.3%
Binge drinking	22.3%
No physical activity	23.1%
Less than 7 hrs sleep	29.9%
Depression	17.0%
Fair or poor health	12.4%
Poor mental health	13.0%
Poor physical health	9.5%
No health insurance	9.2%
Visited doctor (checkup)	73.8%
Visited dentist	67.8%
Cholesterol screening	88.8%
Teeth loss	12.7%

Veterans & disability

Veterans	Count	%
Civilian veterans	38	3.5%

Disability	%
Any disability	5.2%
Under 18	0.0%
18–64 years	5.0%
65 and over	22.5%

Health insurance coverage

Type	%
Private insurance	60.9%
Public insurance	27.1%
No insurance	21.4%
Uninsured under 19	22.5%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	1,395	86.0%
Spanish	27	1.9%
Other Indo-European	21	1.5%
Asian & Pacific Islander	6	0.4%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	1,623	100.0%
Born in same state	1,623	100.0%
Born in different state	1,463	90.1%
Foreign born	0	0.0%
Naturalized citizen	0	0.0%
Not a US citizen	0	0.0%

Ancestry

Ancestry	Count	%
Italian	182	11.2%
Arab	167	10.3%
French	151	9.3%
Dutch	4	0.2%

Ancestry	Count	%
German	2	0.1%
English	2	0.1%
Polish	2	0.1%

Technology access

Metric	% of households
Computer access	34.1%
Internet access	80.3%

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

Frequently asked questions about ZIP code 52237

What city is ZIP code 52237 in?

ZIP code 52237 is primarily assigned to Hopkinton, Iowa.

What county is ZIP code 52237 in?

ZIP code 52237 falls within Delaware County, Iowa.

Is ZIP code 52237 family-oriented?

34% of residents in ZIP code 52237 are under 18, reflecting a younger, family-oriented community.

Is ZIP code 52237 mostly owner-occupied?

86% of occupied units in ZIP code 52237 are owner-occupied, well above the national average.

How educated is the population of ZIP code 52237?

13% of residents hold a bachelor's degree or higher — below the national average of ~33%, consistent with a trades-oriented local economy.

What is the typical home value in ZIP code 52237?

The median home value in ZIP code 52237 is $156,500.

What timezone is ZIP code 52237 in?

ZIP code 52237 observes the CST timezone.