Keystone ZIP Codes — Benton County, IA

There is one unique ZIP code in Keystone, Iowa and it is 52249. Area code: 319.

ZIP codes

49.89

sq mi land

0.00

sq mi water

319

area code

Keystone, IA ZIP code map

About Keystone, IA

Keystone is a charming city located in Benton County, Iowa. Known for its small-town atmosphere, it provides a peaceful retreat for residents and visitors alike. With a rich agricultural background, the city embodies the heartland spirit of Iowa.

Location & geography

Keystone covers a total land area of 49.89 square miles and has no water area. It is situated near the larger towns of Vinton, 10 miles to the south, and Hiawatha, approximately 16 miles to the east. The terrain is predominantly flat, typical of the region's agricultural landscape.

Community & economy

The community of Keystone is tight-knit, where many residents participate in local events and gatherings. Agriculture is a key industry in the area, providing jobs and fostering a connection to the land. Daily life in Keystone often involves a blend of farming activities and community-centered events that bring people together.

Transportation

Keystone is accessible via several highways, including U.S. Route 30, which runs nearby and connects to larger transportation routes in Iowa. The closest major airport is The Eastern Iowa Airport, located about 30 miles to the southeast in Cedar Rapids. Public transit options are limited, making personal vehicles the primary mode of transportation in the area.

History

Keystone was founded in the late 19th century, growing primarily due to its agricultural roots. The city has historically been a hub for farming and related industries that have helped shape its development. Over the years, Keystone has maintained its small-town charm while adapting to modern changes.

Did you know?

A little-known fact about Keystone is that it takes its name from the Keystone, a crucial stone in arch construction. Despite its small size, it has a rich history that reflects the agricultural traditions of Benton County.

ZIP codes for Keystone, IA (1)

ZIP code	City	County	Map
52249	Keystone	Benton	View map

Demographics & statistics

960

Population

42.1

Median age

$75,313

Median household income

$36,480

Per capita income

$143,000

Median home value

$912

Median monthly rent

84.6%

Home ownership

8.2%

Poverty rate

0.9%

Unemployment

334

Housing units

16.6%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

15–19

20–24

25–34

35–44

45–54

55–59

60–64

65–74

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	215	22.4%
18 and over	745	77.6%
65 and over	231	24.1%
Median age	42.1 years

Race & ethnicity

White 90.4%

Hispanic or Latino 3.2%

Other race 2.5%

Two or more races 2.3%

Black or African American 1.1%

American Indian / Alaska Native 0.4%

Group	Count	%
White	897	90.4%
Hispanic or Latino	32	3.2%
Other race	25	2.5%
Two or more races	23	2.3%
Black or African American	11	1.1%
American Indian / Alaska Native	4	0.4%

Household income

$15k–$25k 13.5%

$25k–$35k 5.6%

$35k–$50k 10.3%

$50k–$75k 20.4%

$75k–$100k 21.2%

$100k–$150k 15.6%

$150k–$200k 6.9%

$200k+ 6.4%

Range	% of households
$15k–$25k	13.5%
$25k–$35k	5.6%
$35k–$50k	10.3%
$50k–$75k	20.4%
$75k–$100k	21.2%
$100k–$150k	15.6%
$150k–$200k	6.9%
$200k+	6.4%
Median income	$75,313

Housing

Home values

Under $50k 8.2%

$50k–$100k 24.8%

$100k–$150k 21.6%

$150k–$200k 18.5%

$200k–$300k 14.1%

$300k–$500k 10.3%

$500k–$1M 2.5%

Housing overview

Metric	Value
Median home value	$143,000
Median rent / month	$912
Owner occupied	84.6%
Renter occupied	15.4%
Vacant	3.8%
Single-family detached	95.2%
Large apartment buildings	0.5%
Mobile homes	0.0%
Median rooms	7.0
Avg household size (owned)	2.40

Year built

Era	%
2020 or later	0.0%
2010–2019	0.8%
2000–2009	6.6%
1990–1999	3.1%
1980–1989	4.6%
1970–1979	11.5%
1960–1969	6.9%
1950–1959	10.2%
1940–1949	4.8%
1939 or earlier	51.5%

Bedrooms

Size	% of units
No bedroom (studio)	1.5%
1 bedroom	4.8%
2 bedrooms	18.4%
3 bedrooms	40.3%
4 bedrooms	29.8%
5+ bedrooms	5.1%

Vehicles per household

Vehicles	% of households
No vehicle	5.3%
1 vehicle	26.5%
2 vehicles	35.8%
3 or more	32.4%

Heating fuel

Fuel type	%
Utility gas	54.6%
Electricity	20.2%
Propane / LP gas	22.5%
No fuel used	2.7%

Households & families

Household type	Count	%
Married-couple family	213	56.5%
Cohabiting couple	37	9.8%
Male householder, no spouse	76	20.2%
Female householder, no spouse	51	13.5%
Households with children under 18	124	32.9%
Households with seniors (65+)	153	40.6%
Average household size	2.45

Marital status

Status	Male	Female
Never married	27.2%	13.6%
Married	59.9%	57.5%
Separated	0.2%	0.0%
Widowed	1.7%	13.1%
Divorced	11.1%	15.7%

Education

Less than 9th grade 1.0%

Some HS, no diploma 7.9%

HS graduate 34.6%

Some college, no degree 20.1%

Associate's degree 19.7%

Bachelor's degree 11.6%

Graduate / professional 4.9%

Metric	%
HS diploma or higher	91.0%
Bachelor's or higher	16.6%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	9	3.8%
Kindergarten	10	4.3%
Elementary school	112	47.9%
High school	64	27.4%
College / grad school	39	16.7%

Employment

Industry of employment

Education & healthcare 27.9%

Construction 15.8%

Agriculture & mining 11.7%

Retail trade 8.4%

Manufacturing 8.2%

Transportation & utilities 8.2%

Finance & real estate 6.3%

Arts, food & hospitality 6.0%

Professional & management 3.2%

Other services 2.6%

Information 1.3%

Wholesale trade 0.4%

Occupation

Category	%
Management, business & arts	41.3%
Service	18.4%
Sales & office	10.2%
Natural resources & construction	17.1%
Production & transportation	13.2%

Employment type

Type	%
Private sector	78.6%
Government	8.0%
Self-employed	13.4%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	82.3%
Carpool	4.8%
Public transit	0.0%
Walk	2.6%
Other means	0.0%
Avg commute (minutes)	30.1

Poverty

All people 8.2%

Under 18 years 17.7%

18 and over 5.4%

Married-couple families 1.4%

Female-led households 50.0%

Income support

Source	% of households
Social Security	42.2%
Retirement income	26.8%
Supplemental Security	8.0%
Cash public assistance	0.5%
Food stamps / SNAP	8.0%

Health indicators

Condition	%
High blood pressure	35.3%
High cholesterol	34.7%
Heart disease	7.6%
Stroke	3.5%
Asthma	9.0%
Arthritis	28.2%
Kidney disease	3.2%
Pulmonary disease	7.2%
Cancer	8.7%

Behavior / access	%
Binge drinking	19.3%
No physical activity	25.0%
Less than 7 hrs sleep	30.9%
Fair or poor health	13.1%
Poor mental health	12.5%
Poor physical health	9.8%
No health insurance	9.2%
Visited doctor (checkup)	75.6%
Visited dentist	68.3%
Cholesterol screening	90.1%
Teeth loss	13.1%

Veterans & disability

Veterans	Count	%
Civilian veterans	68	9.1%

Disability	%
Any disability	12.7%
Under 18	0.9%
18–64 years	10.9%
65 and over	29.4%

Health insurance coverage

Type	%
Private insurance	69.7%
Public insurance	41.3%
Uninsured under 19	0.9%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	937	97.6%
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)	955	99.5%
Born in same state	955	99.5%
Born in different state	849	88.4%
Foreign born	0	0.0%
Naturalized citizen	5	0.5%
Not a US citizen	2	40.0%

Ancestry

Ancestry	Count	%
Italian	113	11.8%
French	70	7.3%
English	54	5.6%

Ancestry	Count	%
Arab	18	1.9%
Dutch	9	0.9%
Polish	8	0.8%

Technology access

Metric	% of households
Computer access	39.3%
Internet access	91.2%

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

Frequently asked questions

What ZIP codes does Keystone, IA have?

Keystone, IA has one ZIP code: 52249. Each ZIP code serves a distinct delivery area within the city and surrounding region.