52320 ZIP Code — Olin, IA

Jones County, Iowa

ZIP code 52320 is located in Olin, Iowa, within Jones County. It covers approximately 58.14 square miles and serves a population of 1,290 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 319.

About ZIP code 52320

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 $124,200. Owner-occupancy is high at 76%, well above the national average.

Median household income is $64,479. 30% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is sales and office, with retail trade as the leading industry. The average commute of 32 minutes is near the national average.

College attainment at 9% is below the national average, consistent with a trades and production-oriented local economy.

Overall, ZIP code 52320 reflects a community defined by a trades-oriented workforce, high homeownership, and a significant Social Security-dependent population.

1,290

population

58.14

sq mi land

Standard

ZIP type

Central (CT)

timezone

52320 ZIP code map

Cities in ZIP code 52320

Below are the cities the US Postal Service accepts for ZIP code 52320. Using any city not on this list may result in mail delivery delays.

City	Status
Olin	Preferred

Nearby ZIP codes

52212 Center Junction (7.4 mi) 52362 Wyoming (7.6 mi) 52337 Stanwood (8.1 mi) 52323 Oxford Junction (8.6 mi) 52205 Anamosa (10 mi) 52306 Mechanicsville (10.3 mi) 52216 Clarence (10.4 mi) 52305 Martelle (10.5 mi) 52321 Onslow (13 mi) 52253 Lisbon (13.3 mi) 52255 Lowden (13.3 mi) 52310 Monticello (14.8 mi)

Demographics updated 05/2026

Population
Total population	1,290
Population density	22 / sq mi
State FIPS	19
County FIPS	105

Geography
Land area	58.14 sq mi
Water area	0.60 sq mi
Latitude	42.0083
Longitude	-91.1471
Timezone	Central (CT)
Area code	319

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	44.5%	43.4%	40.1%
$50k – $100k	38.8%	35.7%	33.4%
$100k – $200k	15.1%	16.9%	21.5%
Over $200k	1.6%	4.0%	5.0%

Demographics & statistics

1,290

Population

People per sq mi

37.4

Median age

$64,479

Median household income

$27,912

Per capita income

$124,200

Median home value

$735

Median monthly rent

75.7%

Home ownership

16.0%

Poverty rate

9.9%

Unemployment

393

Housing units

8.7%

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	252	19.5%
18 and over	1,038	80.5%
65 and over	182	14.1%
Median age	37.4 years

Race & ethnicity

White 82.1%

Hispanic or Latino 8.6%

Two or more races 8.5%

Asian 0.6%

Other race 0.2%

Group	Count	%
White	1,158	82.1%
Hispanic or Latino	121	8.6%
Two or more races	120	8.5%
Asian	9	0.6%
Other race	3	0.2%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	44.5%	43.4%	40.1%
$50k – $100k	38.8%	35.7%	33.4%
$100k – $200k	15.1%	16.9%	21.5%
Over $200k	1.6%	4.0%	5.0%

Under $10k 5.1%

$10k–$15k 2.6%

$15k–$25k 9.1%

$25k–$35k 10.9%

$35k–$50k 10.6%

$50k–$75k 20.4%

$75k–$100k 15.5%

$100k–$150k 17.7%

$150k–$200k 5.3%

$200k+ 2.8%

Range	% of households
Under $10k	5.1%
$10k–$15k	2.6%
$15k–$25k	9.1%
$25k–$35k	10.9%
$35k–$50k	10.6%
$50k–$75k	20.4%
$75k–$100k	15.5%
$100k–$150k	17.7%
$150k–$200k	5.3%
$200k+	2.8%
Median income	$64,479

Housing

Home values

Under $50k 8.7%

$50k–$100k 32.6%

$100k–$150k 21.9%

$150k–$200k 16.6%

$200k–$300k 8.1%

$300k–$500k 8.4%

$500k–$1M 1.4%

$1M+ 2.2%

Housing overview

Metric	Value
Median home value	$124,200
Median rent / month	$735
Owner occupied	75.7%
Renter occupied	24.3%
Vacant	7.3%
Single-family detached	87.0%
Large apartment buildings	0.0%
Mobile homes	6.9%
Median rooms	6.5
Avg household size (owned)	2.54

Year built

Era	%
2020 or later	0.0%
2010–2019	1.2%
2000–2009	4.5%
1990–1999	7.5%
1980–1989	3.0%
1970–1979	18.7%
1960–1969	6.3%
1950–1959	9.1%
1940–1949	4.3%
1939 or earlier	45.4%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	3.2%
2 bedrooms	32.1%
3 bedrooms	41.4%
4 bedrooms	20.5%
5+ bedrooms	2.8%

Vehicles per household

Vehicles	% of households
No vehicle	4.9%
1 vehicle	30.9%
2 vehicles	30.9%
3 or more	33.4%

Heating fuel

Fuel type	%
Utility gas	53.0%
Electricity	8.3%
Propane / LP gas	29.8%
Fuel oil	0.6%
Wood	7.0%
No fuel used	1.3%

Households & families

Household type	Count	%
Married-couple family	249	53.0%
Cohabiting couple	24	5.1%
Male householder, no spouse	106	22.6%
Female householder, no spouse	91	19.4%
Households with children under 18	128	27.2%
Households with seniors (65+)	117	24.9%
Average household size	2.74

Marital status

Status	Male	Female
Never married	41.8%	34.8%
Married	44.5%	47.4%
Separated	0.0%	2.1%
Widowed	2.5%	4.5%
Divorced	11.3%	11.3%

Education

Less than 9th grade 1.6%

Some HS, no diploma 6.1%

HS graduate 49.3%

Some college, no degree 18.6%

Associate's degree 15.7%

Bachelor's degree 6.1%

Graduate / professional 2.6%

Metric	%
HS diploma or higher	92.3%
Bachelor's or higher	8.7%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	22	7.9%
Kindergarten	17	6.1%
Elementary school	99	35.5%
High school	95	34.1%
College / grad school	46	16.5%

Employment

Industry of employment

Retail trade 20.5%

Construction 16.4%

Professional & management 13.2%

Education & healthcare 12.5%

Manufacturing 10.3%

Transportation & utilities 7.4%

Agriculture & mining 4.1%

Finance & real estate 3.8%

Wholesale trade 2.8%

Information 2.7%

Public administration 2.5%

Arts, food & hospitality 2.4%

Other services 1.4%

Occupation

Category	%
Management, business & arts	19.6%
Service	12.6%
Sales & office	29.7%
Natural resources & construction	26.8%
Production & transportation	11.4%

Employment type

Type	%
Private sector	86.9%
Government	7.7%
Self-employed	5.4%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	62.8%
Carpool	22.9%
Public transit	0.0%
Walk	4.4%
Work from home	9.7%
Other means	0.2%
Avg commute (minutes)	32.3

Poverty

All people 16.0%

Under 18 years 32.1%

18 and over 12.2%

Married-couple families 5.6%

Female-led households 21.3%

Income support

Source	% of households
Social Security	30.4%
Retirement income	19.4%
Supplemental Security	12.1%
Cash public assistance	1.7%
Food stamps / SNAP	13.8%

Health indicators

Condition	%
Obesity	38.0%
High blood pressure	35.0%
High cholesterol	33.3%
Diabetes	10.8%
Heart disease	7.2%
Stroke	3.2%
Asthma	9.5%
Arthritis	25.6%
Kidney disease	3.0%
Pulmonary disease	7.5%
Cancer	7.2%

Behavior / access	%
Smoking	19.3%
Binge drinking	20.6%
No physical activity	25.3%
Less than 7 hrs sleep	30.3%
Depression	18.1%
Fair or poor health	13.6%
Poor mental health	13.5%
Poor physical health	10.4%
No health insurance	9.5%
Visited doctor (checkup)	74.7%
Visited dentist	67.8%
Cholesterol screening	88.6%
Teeth loss	13.6%

Veterans & disability

Veterans	Count	%
Civilian veterans	83	8.0%

Disability	%
Any disability	15.7%
Under 18	4.4%
18–64 years	15.4%
65 and over	32.4%

Health insurance coverage

Type	%
Private insurance	58.4%
Public insurance	50.1%
No insurance	2.7%
Uninsured under 19	0.7%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	1,239	96.0%
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)	1,288	99.8%
Born in same state	1,281	99.3%
Born in different state	1,133	87.8%
Foreign born	7	0.5%
Naturalized citizen	2	0.2%
Not a US citizen	2	100.0%

Ancestry

Ancestry	Count	%
Italian	228	17.7%
Arab	106	8.2%
English	49	3.8%

Ancestry	Count	%
French	33	2.6%
Dutch	9	0.7%
Polish	7	0.5%

Technology access

Metric	% of households
Computer access	36.4%
Internet access	87.4%

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

Frequently asked questions about ZIP code 52320

What city is ZIP code 52320 in?

ZIP code 52320 is primarily assigned to Olin, Iowa.

What county is ZIP code 52320 in?

ZIP code 52320 falls within Jones County, Iowa.

How educated is the population of ZIP code 52320?

9% 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 poverty rate in ZIP code 52320?

16% of residents in ZIP code 52320 live below the poverty line, above the national average.

What is the typical home value in ZIP code 52320?

The median home value in ZIP code 52320 is $124,200.

What is the population of ZIP code 52320?

ZIP code 52320 has an estimated population of 1,290 residents, with a density of 22 people per square mile.

What timezone is ZIP code 52320 in?

ZIP code 52320 observes the CST timezone.