51431 ZIP Code — Arthur, IA

Ida County, Iowa

ZIP code 51431 is located in Arthur, Iowa, within Ida County. It covers approximately 37.86 square miles and serves a population of 463 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 712.

About ZIP code 51431

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 $94,400. Owner-occupancy sits near the national average at 69%.

Median household income is $51,774. 46% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is production, transportation, and material moving, with manufacturing as the leading industry. The average commute of 20 minutes is near the national average.

College attainment at 18% is below the national average, consistent with a trades and production-oriented local economy.

Notable community characteristics include a notable veteran presence at 18% of civilians, above the national average of 7%; and disability rates above the national average at 24%.

Overall, ZIP code 51431 reflects a community defined by a trades-oriented workforce, a strong veteran community, and a significant Social Security-dependent population.

463

population

37.86

sq mi land

Standard

ZIP type

Central (CT)

timezone

51431 ZIP code map

Cities in ZIP code 51431

Below are the cities the US Postal Service accepts for ZIP code 51431. Using any city not on this list may result in mail delivery delays.

City	Status
Arthur	Preferred

Nearby ZIP codes

51445 Ida Grove (5 mi) 51458 Odebolt (6.7 mi) 51448 Kiron (10.9 mi) 51020 Galva (11 mi) 51053 Schaller (11.1 mi) 50535 Early (13.1 mi) 51461 Schleswig (13.4 mi) 51006 Battle Creek (14.7 mi) 51466 Wall Lake (15 mi) 51441 Deloit (15.4 mi) 51025 Holstein (15.5 mi) 51018 Cushing (16.9 mi)

Demographics updated 05/2026

Population
Total population	463
Population density	12 / sq mi
State FIPS	19
County FIPS	093

Geography
Land area	37.86 sq mi
Water area	0.00 sq mi
Latitude	42.3415
Longitude	-95.3617
Timezone	Central (CT)
Area code	712

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	54.0%	44.7%	40.1%
$50k – $100k	24.5%	34.1%	33.4%
$100k – $200k	19.0%	17.6%	21.5%
Over $200k	2.5%	3.6%	5.0%

Demographics & statistics

463

Population

People per sq mi

47.5

Median age

$51,774

Median household income

$30,860

Per capita income

$94,400

Median home value

$622

Median monthly rent

69.2%

Home ownership

10.2%

Poverty rate

2.0%

Unemployment

152

Housing units

18.2%

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	75	16.2%
18 and over	388	83.8%
65 and over	142	30.7%
Median age	47.5 years

Race & ethnicity

White 79.4%

Hispanic or Latino 7.4%

Two or more races 6.4%

Other race 6%

American Indian / Alaska Native 0.8%

Group	Count	%
White	397	79.4%
Hispanic or Latino	37	7.4%
Two or more races	32	6.4%
Other race	30	6%
American Indian / Alaska Native	4	0.8%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	54.0%	44.7%	40.1%
$50k – $100k	24.5%	34.1%	33.4%
$100k – $200k	19.0%	17.6%	21.5%
Over $200k	2.5%	3.6%	5.0%

Under $10k 5.6%

$10k–$15k 3.3%

$15k–$25k 3.7%

$25k–$35k 8.4%

$35k–$50k 18.7%

$50k–$75k 24.8%

$75k–$100k 7.9%

$100k–$150k 25.7%

$150k–$200k 1.9%

Range	% of households
Under $10k	5.6%
$10k–$15k	3.3%
$15k–$25k	3.7%
$25k–$35k	8.4%
$35k–$50k	18.7%
$50k–$75k	24.8%
$75k–$100k	7.9%
$100k–$150k	25.7%
$150k–$200k	1.9%
Median income	$51,774

Housing

Home values

Under $50k 25.7%

$50k–$100k 27.7%

$100k–$150k 12.2%

$150k–$200k 7.4%

$200k–$300k 16.9%

$300k–$500k 6.8%

$1M+ 3.4%

Housing overview

Metric	Value
Median home value	$94,400
Median rent / month	$622
Owner occupied	69.2%
Renter occupied	30.8%
Vacant	1.8%
Single-family detached	78.4%
Large apartment buildings	0.0%
Mobile homes	3.2%
Median rooms	6.9
Avg household size (owned)	2.20

Year built

Era	%
2020 or later	0.0%
2010–2019	0.0%
2000–2009	0.0%
1990–1999	6.0%
1980–1989	4.1%
1970–1979	19.3%
1960–1969	7.3%
1950–1959	22.9%
1940–1949	5.5%
1939 or earlier	34.9%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	22.5%
2 bedrooms	8.7%
3 bedrooms	40.8%
4 bedrooms	24.3%
5+ bedrooms	3.7%

Vehicles per household

Vehicles	% of households
No vehicle	2.3%
1 vehicle	22.4%
2 vehicles	54.2%
3 or more	21.0%

Heating fuel

Fuel type	%
Utility gas	28.5%
Electricity	43.5%
Propane / LP gas	25.7%
Fuel oil	0.5%
Wood	1.4%

Households & families

Household type	Count	%
Married-couple family	111	51.9%
Cohabiting couple	31	14.5%
Male householder, no spouse	35	16.4%
Female householder, no spouse	37	17.3%
Households with children under 18	38	17.8%
Households with seniors (65+)	92	43.0%
Average household size	2.16

Marital status

Status	Male	Female
Never married	35.0%	21.3%
Married	59.3%	60.1%
Separated	0.0%	0.5%
Widowed	0.0%	9.3%
Divorced	5.6%	8.7%

Education

Less than 9th grade 0.3%

Some HS, no diploma 6.9%

HS graduate 51.9%

Some college, no degree 11.9%

Associate's degree 10.7%

Bachelor's degree 16.7%

Graduate / professional 1.6%

Metric	%
HS diploma or higher	92.8%
Bachelor's or higher	18.2%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	9	12.0%
Kindergarten	4	5.3%
Elementary school	22	29.3%
High school	10	13.3%
College / grad school	30	40.0%

Employment

Industry of employment

Manufacturing 38.1%

Education & healthcare 19.7%

Retail trade 18.4%

Construction 5.7%

Other services 5.3%

Agriculture & mining 3.7%

Transportation & utilities 3.3%

Finance & real estate 2.0%

Information 1.6%

Professional & management 1.2%

Arts, food & hospitality 0.4%

Public administration 0.4%

Occupation

Category	%
Management, business & arts	25.8%
Service	7.4%
Sales & office	23.4%
Natural resources & construction	7.0%
Production & transportation	36.5%

Employment type

Type	%
Private sector	92.2%
Government	4.5%
Self-employed	3.3%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	85.2%
Carpool	7.8%
Public transit	0.0%
Walk	2.1%
Work from home	4.9%
Other means	0.0%
Avg commute (minutes)	19.5

Poverty

All people 10.2%

Under 18 years 0.0%

18 and over 12.1%

Married-couple families 0.0%

Female-led households 0.0%

Income support

Source	% of households
Social Security	45.8%
Retirement income	22.4%
Supplemental Security	0.9%
Cash public assistance	1.9%
Food stamps / SNAP	2.3%

Health indicators

Condition	%
Obesity	37.6%
High blood pressure	36.7%
High cholesterol	36.3%
Diabetes	11.4%
Heart disease	8.1%
Stroke	3.6%
Asthma	9.2%
Arthritis	28.8%
Kidney disease	3.3%
Pulmonary disease	8.0%
Cancer	8.4%

Behavior / access	%
Smoking	18.2%
Binge drinking	19.9%
No physical activity	26.1%
Less than 7 hrs sleep	29.3%
Depression	16.9%
Fair or poor health	14.4%
Poor mental health	12.8%
Poor physical health	10.7%
No health insurance	9.5%
Visited doctor (checkup)	76.3%
Visited dentist	67.4%
Cholesterol screening	90.1%
Teeth loss	14.0%

Veterans & disability

Veterans	Count	%
Civilian veterans	68	17.6%

Disability	%
Any disability	23.6%
Under 18	2.7%
18–64 years	29.8%
65 and over	23.9%

Health insurance coverage

Type	%
Private insurance	61.7%
Public insurance	51.5%
No insurance	1.9%
Uninsured under 19	6.4%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	425	91.8%
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)	463	100.0%
Born in same state	463	100.0%
Born in different state	356	76.9%
Foreign born	0	0.0%
Naturalized citizen	0	0.0%
Not a US citizen	0	0.0%

Ancestry

Ancestry	Count	%
Italian	60	13%
Arab	52	11.2%
French	18	3.9%

Ancestry	Count	%
English	13	2.8%
Dutch	10	2.2%
Polish	3	0.6%

Technology access

Metric	% of households
Computer access	46.2%
Internet access	91.6%

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

Frequently asked questions about ZIP code 51431

What city is ZIP code 51431 in?

ZIP code 51431 is primarily assigned to Arthur, Iowa.

What county is ZIP code 51431 in?

ZIP code 51431 falls within Ida County, Iowa.

Does ZIP code 51431 have an older population?

31% of residents in ZIP code 51431 are 65 or older, above the national average of ~17%.

Does ZIP code 51431 have a large retiree population?

46% of households in ZIP code 51431 receive Social Security income, suggesting a significant retiree or disability population.

Does ZIP code 51431 have a large veteran population?

18% of civilians in ZIP code 51431 are veterans, above the national average of ~7%.

What is the typical home value in ZIP code 51431?

The median home value in ZIP code 51431 is $94,400.

What timezone is ZIP code 51431 in?

ZIP code 51431 observes the CST timezone.