Jefferson ZIP Codes — Greene County, IA

There is one unique ZIP code in Jefferson, Iowa and it is 50129. Area code: 515.

ZIP codes

165.35

sq mi land

0.58

sq mi water

515

area code

Jefferson, IA ZIP code map

About Jefferson, IA

Jefferson is a charming city located in Greene County, Iowa. With a rich history and a vibrant community, it offers a unique blend of small-town charm and modern conveniences. Due to its welcoming spirit and engaging local activities, Jefferson attracts both residents and visitors alike.

Location & geography

Nestled in the central region of Iowa, Jefferson is surrounded by notable cities such as Carroll, approximately 25 miles to the south, and Ames, about 35 miles to the east. The city spans a land area of 165.35 square miles and has a small water area of 0.58 square miles. The terrain is predominantly flat, typical of the Midwestern landscape, making it ideal for agriculture.

Community & economy

Jefferson boasts a close-knit community with a strong emphasis on family values and local engagement. The economy is supported by various industries including agriculture, retail, and small businesses that cater to the local population. Daily life in Jefferson is characterized by community events, local festivals, and a range of recreational activities.

Transportation

Jefferson is conveniently accessed via U.S. Route 30, which runs east-west through the city, and State Highway 4 that provides a north-south route. The nearest airports include the Fort Dodge Regional Airport and the Des Moines International Airport, providing both local and broader travel options. Public transit options may be limited, but the community primarily relies on personal vehicles for transportation.

History

Founded in the mid-19th century, Jefferson has a rich history tied to the expansion of the railroads in Iowa. Key industries in Jefferson historically included agriculture and manufacturing, contributing to the city's growth. Notable events that have shaped Jefferson include its establishment as the county seat of Greene County in 1856, which laid the groundwork for its development.

Did you know?

One surprising fact about Jefferson is that it hosts the annual Bell Tower Festival, which celebrates community spirit and local talent each summer. Additionally, Jefferson is home to the world's largest Popcorn Ball, a quirky attraction that draws visitors from across the region.

ZIP codes for Jefferson, IA (1)

ZIP code	City	County	Map
50129	Jefferson	Greene	View map

Demographics & statistics

5,208

Population

46.5

Median age

$55,067

Median household income

$33,493

Per capita income

$130,800

Median home value

$839

Median monthly rent

75.0%

Home ownership

8.0%

Poverty rate

2.6%

Unemployment

2,050

Housing units

21.9%

Bachelor's or higher

Age distribution

Male Female

Under 5

113

160

5–9

183

150

10–14

171

140

15–19

160

110

20–24

126

247

25–34

283

277

35–44

317

207

45–54

236

175

55–59

201

216

60–64

246

339

65–74

388

185

75–84

212

125

85+

142

← Male

Female →

Age summary

Group	Count	%
Under 18	1,065	20.4%
18 and over	4,143	79.6%
65 and over	1,391	26.7%
Median age	46.5 years

Race & ethnicity

White 90.5%

Two or more races 3.9%

Hispanic or Latino 3.4%

Other race 0.8%

Black or African American 0.6%

Asian 0.5%

American Indian / Alaska Native 0.2%

Group	Count	%
White	4,879	90.5%
Two or more races	208	3.9%
Hispanic or Latino	183	3.4%
Other race	45	0.8%
Black or African American	35	0.6%
Asian	28	0.5%
American Indian / Alaska Native	13	0.2%

Household income

Under $10k 3.9%

$10k–$15k 2.3%

$15k–$25k 12.7%

$25k–$35k 5.9%

$35k–$50k 22.3%

$50k–$75k 15.2%

$75k–$100k 10.9%

$100k–$150k 17.6%

$150k–$200k 5.2%

$200k+ 4.1%

Range	% of households
Under $10k	3.9%
$10k–$15k	2.3%
$15k–$25k	12.7%
$25k–$35k	5.9%
$35k–$50k	22.3%
$50k–$75k	15.2%
$75k–$100k	10.9%
$100k–$150k	17.6%
$150k–$200k	5.2%
$200k+	4.1%
Median income	$55,067

Housing

Home values

Under $50k 11.2%

$50k–$100k 25.5%

$100k–$150k 20.4%

$150k–$200k 22.2%

$200k–$300k 13.6%

$300k–$500k 5.9%

$500k–$1M 0.5%

$1M+ 0.7%

Housing overview

Metric	Value
Median home value	$130,800
Median rent / month	$839
Owner occupied	75.0%
Renter occupied	25.0%
Vacant	11.7%
Single-family detached	78.3%
Large apartment buildings	3.9%
Mobile homes	2.1%
Median rooms	5.8
Avg household size (owned)	2.26

Year built

Era	%
2020 or later	0.0%
2010–2019	2.4%
2000–2009	5.2%
1990–1999	7.3%
1980–1989	7.5%
1970–1979	17.1%
1960–1969	7.4%
1950–1959	14.0%
1940–1949	6.6%
1939 or earlier	32.6%

Bedrooms

Size	% of units
No bedroom (studio)	1.3%
1 bedroom	11.7%
2 bedrooms	29.4%
3 bedrooms	40.1%
4 bedrooms	14.7%
5+ bedrooms	2.9%

Vehicles per household

Vehicles	% of households
No vehicle	6.1%
1 vehicle	38.8%
2 vehicles	38.0%
3 or more	17.1%

Heating fuel

Fuel type	%
Utility gas	62.4%
Electricity	24.8%
Propane / LP gas	11.6%
No fuel used	0.4%

Households & families

Household type	Count	%
Married-couple family	968	41.7%
Cohabiting couple	97	4.2%
Male householder, no spouse	289	12.4%
Female householder, no spouse	969	41.7%
Households with children under 18	413	17.8%
Households with seniors (65+)	1,033	44.5%
Average household size	2.19

Marital status

Status	Male	Female
Never married	26.6%	15.4%
Married	56.8%	44.9%
Separated	3.0%	1.8%
Widowed	3.4%	20.2%
Divorced	10.2%	17.6%

Education

Less than 9th grade 2.4%

Some HS, no diploma 5.0%

HS graduate 32.4%

Some college, no degree 22.4%

Associate's degree 16.1%

Bachelor's degree 14.8%

Graduate / professional 7.1%

Metric	%
HS diploma or higher	92.7%
Bachelor's or higher	21.9%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	144	13.7%
Kindergarten	75	7.1%
Elementary school	509	48.4%
High school	211	20.1%
College / grad school	113	10.7%

Employment

Industry of employment

Education & healthcare 28.5%

Retail trade 14.0%

Professional & management 11.0%

Manufacturing 8.5%

Finance & real estate 6.4%

Wholesale trade 5.4%

Construction 5.2%

Arts, food & hospitality 4.4%

Transportation & utilities 4.2%

Agriculture & mining 4.0%

Other services 4.0%

Public administration 3.3%

Information 1.1%

Occupation

Category	%
Management, business & arts	40.5%
Service	12.7%
Sales & office	17.0%
Natural resources & construction	6.4%
Production & transportation	23.3%

Employment type

Type	%
Private sector	72.5%
Government	19.4%
Self-employed	8.1%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	71.8%
Carpool	14.8%
Public transit	0.0%
Walk	5.7%
Other means	2.0%
Avg commute (minutes)	21.8

Poverty

All people 8.0%

Under 18 years 5.6%

18 and over 8.6%

Married-couple families 2.4%

Female-led households 17.8%

Income support

Source	% of households
Social Security	44.9%
Retirement income	31.7%
Supplemental Security	5.0%
Cash public assistance	1.7%
Food stamps / SNAP	10.6%

Health indicators

Condition	%
High blood pressure	37.2%
High cholesterol	37.3%
Heart disease	8.1%
Stroke	3.7%
Asthma	9.1%
Arthritis	28.6%
Kidney disease	3.4%
Pulmonary disease	7.6%
Cancer	8.9%

Behavior / access	%
Binge drinking	19.3%
No physical activity	26.4%
Less than 7 hrs sleep	29.7%
Fair or poor health	13.7%
Poor mental health	12.6%
Poor physical health	10.4%
No health insurance	9.0%
Visited doctor (checkup)	77.6%
Visited dentist	68.0%
Cholesterol screening	90.3%
Teeth loss	13.1%

Veterans & disability

Veterans	Count	%
Civilian veterans	436	10.5%

Disability	%
Any disability	19.6%
Under 18	8.4%
18–64 years	13.7%
65 and over	41.0%

Health insurance coverage

Type	%
Private insurance	78.0%
Public insurance	43.3%
Uninsured under 19	1.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	4,996	95.9%
Spanish	80	1.6%
Other Indo-European	62	1.2%
Asian & Pacific Islander	18	0.4%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	5,139	98.7%
Born in same state	5,094	97.8%
Born in different state	4,036	77.5%
Foreign born	45	0.9%
Naturalized citizen	69	1.3%
Not a US citizen	61	88.4%

Ancestry

Ancestry	Count	%
French	962	18.5%
Italian	724	13.9%
Polish	285	5.5%

Ancestry	Count	%
Dutch	208	4%
English	168	3.2%
Arab	163	3.1%

Technology access

Metric	% of households
Computer access	44.6%
Internet access	93.2%

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

Frequently asked questions

What ZIP codes does Jefferson, IA have?

Jefferson, IA has one ZIP code: 50129. Each ZIP code serves a distinct delivery area within the city and surrounding region.