50128 ZIP Code — Jamaica, IA

Guthrie County, Iowa

ZIP code 50128 is located in Jamaica, Iowa, within Guthrie County. It covers approximately 28.24 square miles and serves a population of 429 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 641.

About ZIP code 50128

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 $106,800. Owner-occupancy is high at 84%, well above the national average.

Median household income is $47,462. Poverty affects 18% of residents, above the national average. 64% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with construction as the leading industry. An above-average commute of 43 minutes suggests many residents work outside the immediate area.

College attainment at 19% is below the national average, consistent with a trades and production-oriented local economy.

Notable community characteristics include a notable veteran presence at 17% of civilians, above the national average of 7%.

Overall, ZIP code 50128 reflects a community defined by a trades-oriented workforce, economic challenges above the national average, a strong veteran community, high homeownership, and a significant Social Security-dependent population.

429

population

28.24

sq mi land

Standard

ZIP type

Central (CT)

timezone

50128 ZIP code map

Cities in ZIP code 50128

Below are the cities the US Postal Service accepts for ZIP code 50128. Using any city not on this list may result in mail delivery delays.

City	Status
Jamaica	Preferred

Nearby ZIP codes

50277 Yale (5.3 mi) 50066 Dawson (5.4 mi) 50235 Rippey (6.8 mi) 50026 Bagley (7.1 mi) 50220 Perry (9.4 mi) 50129 Jefferson (11.7 mi) 50216 Panora (11.7 mi) 50146 Linden (12.3 mi) 50107 Grand Junction (12.6 mi) 50029 Bayard (13.2 mi) 50167 Minburn (14.5 mi) 50039 Bouton (15.5 mi)

Demographics updated 05/2026

Population
Total population	429
Population density	15 / sq mi
State FIPS	19
County FIPS	077

Geography
Land area	28.24 sq mi
Water area	0.08 sq mi
Latitude	41.8524
Longitude	-94.2970
Timezone	Central (CT)
Area code	641

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	53.8%	42.5%	40.1%
$50k – $100k	26.3%	33.0%	33.4%
$100k – $200k	19.9%	21.1%	21.5%
Over $200k	0.0%	3.4%	5.0%

Demographics & statistics

429

Population

People per sq mi

55.1

Median age

$47,462

Median household income

$28,200

Per capita income

$106,800

Median home value

$619

Median monthly rent

83.9%

Home ownership

17.6%

Poverty rate

4.4%

Unemployment

172

Housing units

19.0%

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

← Male

Female →

Age summary

Group	Count	%
Under 18	107	24.9%
18 and over	322	75.1%
65 and over	154	35.9%
Median age	55.1 years

Race & ethnicity

White 100%

Group	Count	%
White	429	100%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	53.8%	42.5%	40.1%
$50k – $100k	26.3%	33.0%	33.4%
$100k – $200k	19.9%	21.1%	21.5%
Over $200k	0.0%	3.4%	5.0%

Under $10k 2.6%

$10k–$15k 7.3%

$15k–$25k 6.7%

$25k–$35k 3.6%

$35k–$50k 31.6%

$50k–$75k 8.3%

$75k–$100k 13.5%

$100k–$150k 25.9%

$200k+ 0.5%

Range	% of households
Under $10k	2.6%
$10k–$15k	7.3%
$15k–$25k	6.7%
$25k–$35k	3.6%
$35k–$50k	31.6%
$50k–$75k	8.3%
$75k–$100k	13.5%
$100k–$150k	25.9%
$200k+	0.5%
Median income	$47,462

Housing

Home values

Under $50k 13.6%

$50k–$100k 30.9%

$100k–$150k 21.6%

$150k–$200k 4.3%

$200k–$300k 15.4%

$300k–$500k 14.2%

Housing overview

Metric	Value
Median home value	$106,800
Median rent / month	$619
Owner occupied	83.9%
Renter occupied	16.1%
Vacant	4.9%
Single-family detached	92.1%
Large apartment buildings	0.0%
Mobile homes	2.0%
Median rooms	6.6
Avg household size (owned)	1.92

Year built

Era	%
2020 or later	0.0%
2010–2019	0.0%
2000–2009	15.8%
1990–1999	2.5%
1980–1989	0.0%
1970–1979	11.8%
1960–1969	3.9%
1950–1959	3.4%
1940–1949	5.4%
1939 or earlier	57.1%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	1.0%
2 bedrooms	22.7%
3 bedrooms	46.3%
4 bedrooms	17.2%
5+ bedrooms	12.8%

Vehicles per household

Vehicles	% of households
No vehicle	1.0%
1 vehicle	15.5%
2 vehicles	57.0%
3 or more	26.4%

Heating fuel

Fuel type	%
Utility gas	45.1%
Electricity	10.9%
Propane / LP gas	32.6%
Wood	6.2%

Households & families

Household type	Count	%
Married-couple family	94	48.7%
Cohabiting couple	30	15.5%
Male householder, no spouse	30	15.5%
Female householder, no spouse	39	20.2%
Households with children under 18	44	22.8%
Households with seniors (65+)	116	60.1%
Average household size	2.22

Marital status

Status	Male	Female
Never married	13.6%	22.2%
Married	54.4%	45.0%
Separated	1.8%	1.1%
Widowed	14.2%	13.9%
Divorced	16.0%	17.8%

Education

Less than 9th grade 0.3%

Some HS, no diploma 8.1%

HS graduate 43.1%

Some college, no degree 19.0%

Associate's degree 10.5%

Bachelor's degree 17.3%

Graduate / professional 1.7%

Metric	%
HS diploma or higher	91.5%
Bachelor's or higher	19.0%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	6	5.8%
Kindergarten	0	0.0%
Elementary school	72	69.9%
High school	20	19.4%
College / grad school	5	4.9%

Employment

Industry of employment

Construction 24.1%

Education & healthcare 24.1%

Manufacturing 18.4%

Retail trade 11.5%

Transportation & utilities 4.6%

Finance & real estate 4.6%

Professional & management 4.6%

Public administration 3.4%

Arts, food & hospitality 2.3%

Other services 2.3%

Occupation

Category	%
Management, business & arts	32.2%
Service	9.2%
Sales & office	11.5%
Natural resources & construction	21.8%
Production & transportation	25.3%

Employment type

Type	%
Private sector	72.4%
Government	25.3%
Self-employed	2.3%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	90.6%
Carpool	3.5%
Public transit	0.0%
Walk	3.5%
Work from home	2.4%
Other means	0.0%
Avg commute (minutes)	43.1

Poverty

All people 17.6%

Under 18 years 13.3%

18 and over 18.9%

Married-couple families 10.6%

Female-led households 66.7%

Income support

Source	% of households
Social Security	64.2%
Retirement income	43.0%
Supplemental Security	2.1%
Cash public assistance	5.2%
Food stamps / SNAP	7.8%

Health indicators

Condition	%
Obesity	39.0%
High blood pressure	35.2%
High cholesterol	34.8%
Diabetes	10.4%
Heart disease	7.0%
Stroke	3.1%
Asthma	9.2%
Arthritis	27.3%
Kidney disease	3.0%
Pulmonary disease	7.1%
Cancer	7.8%

Behavior / access	%
Smoking	17.0%
Binge drinking	20.6%
No physical activity	25.1%
Less than 7 hrs sleep	29.7%
Depression	17.0%
Fair or poor health	12.6%
Poor mental health	12.7%
Poor physical health	9.8%
No health insurance	9.0%
Visited doctor (checkup)	75.8%
Visited dentist	69.2%
Cholesterol screening	89.9%
Teeth loss	11.7%

Veterans & disability

Veterans	Count	%
Civilian veterans	56	17.4%

Disability	%
Any disability	19.3%
Under 18	20.6%
18–64 years	2.4%
65 and over	37.0%

Health insurance coverage

Type	%
Private insurance	64.6%
Public insurance	67.1%
No insurance	2.8%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	416	97.0%
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)	429	100.0%
Born in same state	429	100.0%
Born in different state	319	74.4%
Foreign born	0	0.0%
Naturalized citizen	0	0.0%
Not a US citizen	0	0.0%

Ancestry

Ancestry	Count	%
Italian	42	9.8%
French	38	8.9%
Arab	34	7.9%

Ancestry	Count	%
English	19	4.4%
Polish	3	0.7%

Technology access

Metric	% of households
Computer access	45.0%
Internet access	95.3%

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

Frequently asked questions about ZIP code 50128

What city is ZIP code 50128 in?

ZIP code 50128 is primarily assigned to Jamaica, Iowa.

What county is ZIP code 50128 in?

ZIP code 50128 falls within Guthrie County, Iowa.

Does ZIP code 50128 have a large retiree population?

64% of households in ZIP code 50128 receive Social Security income, suggesting a significant retiree or disability population.

Does ZIP code 50128 have an older population?

36% of residents in ZIP code 50128 are 65 or older, above the national average of ~17%.

Is ZIP code 50128 mostly owner-occupied?

84% of occupied units in ZIP code 50128 are owner-occupied, well above the national average.

What is the poverty rate in ZIP code 50128?

18% of residents in ZIP code 50128 live below the poverty line, above the national average.

What timezone is ZIP code 50128 in?

ZIP code 50128 observes the CST timezone.