Zip code 51031: Le Mars, Iowa

Q: What city is zip code 51031?

51031 is assigned to Le Mars, Iowa. The city name is the one the Postal Service prefers for mail addressed to this zip code.

Q: What county is 51031 in?

51031 is mostly in Plymouth County, but it extends into 1 other county.

Q: What is the population of 51031?

About 12,808 people live in 51031, according to the Census Bureau's American Community Survey.

Q: What is the median household income in 51031?

The median household income in 51031 is $76,525.

Q: What zip codes are near 51031?

The closest zip codes to 51031 are 51008, 51045, 51038, 51036, 51050.

Residential delivery areaPlymouth CountyCentral Time

Population

12,808

Median household income

$77K

U.S. $81K

Median home value

$223K

U.S. $333K

Median rent

$928/mo

U.S. $1,413

Median age

U.S. 38.9

Land area

234 sq mi

55 people/sq mi

Boundary is the Census Bureau's ZIP Code Tabulation Area, which closely tracks the postal delivery area.

About 51031

51031 is a small-town zip code in Le Mars, Iowa (Plymouth County), covering 234 sq mi of land. About 12,808 people live here, or 55 per square mile. The median resident is 39 years old, compared with 38.9 nationally.

The median household earns $76,525 a year, close to the national median of $80,734. 8.3% of residents live below the poverty line (U.S.: 12.5%). A typical home is valued at $222,800, or 2.9 years of median household income (U.S.: 4.1 years), which makes homes relatively affordable for local earners. 65% of occupied homes are lived in by their owners, and renters pay a median of $928 a month.

22% of adults hold a bachelor's degree or higher (U.S.: 36%). Commuters average 16.8 minutes each way, and 6% of workers work from home. The most common jobs among working residents are in office and administrative support; production and manufacturing; and transportation and moving goods.

How 51031 compares

Sorted from highest to lowest national percentile

Residents under 1825.5%
78th
U.S. 22% · IA 22.9%285th of 911 in IA
Self-employed workers10.9%
68th
U.S. 10% · IA 10.2%583rd of 911 in IA
Residents 65 and older17.2%
55th
U.S. 17.2% · IA 18.1%636th of 911 in IA
Median earnings per worker$49,368
54th
U.S. $49,666 · IA $47,712359th of 910 in IA
Median age39
50th
U.S. 38.9 · IA 38.6653rd of 911 in IA
Veterans5.6%
47th
U.S. 6.2% · IA 6.5%619th of 911 in IA
Median household income$76,525
46th
U.S. $80,734 · IA $75,059392nd of 896 in IA
Per capita income$38,599
45th
U.S. $44,673 · IA $40,877441st of 911 in IA
Government workers12.9%
43rd
U.S. 14.5% · IA 14.5%476th of 911 in IA
Homeownership rate65.1%
42nd
U.S. 65.2% · IA 71.7%849th of 909 in IA
Uninsured rate5.8%
41st
U.S. 8.4% · IA 5%249th of 911 in IA
Healthcare workers8.7%
38th
U.S. 9.7% · IA 9.2%431st of 911 in IA
Broadband access90.3%
36th
U.S. 91% · IA 88.9%352nd of 909 in IA
Poverty rate8.3%
34th
U.S. 12.5% · IA 11.1%470th of 909 in IA
Foreign-born residents5.6%
32nd
U.S. 14.1% · IA 5.9%119th of 911 in IA
Housing vacancy4.5%
28th
U.S. 10.1% · IA 8.5%710th of 909 in IA
Median home value$222,800
26th
U.S. $332,700 · IA $208,000196th of 881 in IA
Bachelor's degree or higher21.9%
26th
U.S. 35.7% · IA 31.4%415th of 911 in IA
Diversity index29.1
22nd
U.S. 61.4 · IA 31.4129th of 911 in IA
Income inequality (Gini)0.400
21st
U.S. 0.483 · IA 0.444427th of 908 in IA
Population12,808
20th
U.S. 334,922,499 · IA 3,210,50764th of 911 in IA
Tech workers1.2%
17th
U.S. 3.8% · IA 2.9%369th of 911 in IA
Median gross rent$928
16th
U.S. $1,413 · IA $972230th of 771 in IA
Unemployment rate2.6%
11th
StrengthU.S. 5.2% · IA 3.6%398th of 911 in IA
Work from home5.6%
10th
U.S. 15.1% · IA 11.3%658th of 911 in IA
Population density55/sq mi
8th
U.S. 95/sq mi · IA 58/sq mi221st of 911 in IA
Rent-burdened renters30.8%
5th
StrengthU.S. 51.1% · IA 43.9%502nd of 882 in IA
Average commute16.8 min
3rd
StrengthU.S. 26.4 min · IA 19.8 min796th of 902 in IA

Measure	51031	Plymouth	IA	U.S.	National percentile	Rank in IA
Residents under 18	25.5%	25%	22.9%	22%	78th	285th of 911
Self-employed workers	10.9%	13.2%	10.2%	10%	68th	583rd of 911
Residents 65 and older	17.2%	19.8%	18.1%	17.2%	55th	636th of 911
Median earnings per worker	$49,368	$49,734	$47,712	$49,666	54th	359th of 910
Median age	39	41.3	38.6	38.9	50th	653rd of 911
Veterans	5.6%	6.9%	6.5%	6.2%	47th	619th of 911
Median household income	$76,525	$83,251	$75,059	$80,734	46th	392nd of 896
Per capita income	$38,599	$41,532	$40,877	$44,673	45th	441st of 911
Government workers	12.9%	11.9%	14.5%	14.5%	43rd	476th of 911
Homeownership rate	65.1%	73.6%	71.7%	65.2%	42nd	849th of 909
Uninsured rate	5.8%	5.3%	5%	8.4%	41st	249th of 911
Healthcare workers	8.7%	9.5%	9.2%	9.7%	38th	431st of 911
Broadband access	90.3%	89.8%	88.9%	91%	36th	352nd of 909
Poverty rate	8.3%	6.9%	11.1%	12.5%	34th	470th of 909
Foreign-born residents	5.6%	3.7%	5.9%	14.1%	32nd	119th of 911
Housing vacancy	4.5%	5.3%	8.5%	10.1%	28th	710th of 909
Median home value	$222,800	$228,900	$208,000	$332,700	26th	196th of 881
Bachelor's degree or higher	21.9%	21.7%	31.4%	35.7%	26th	415th of 911
Diversity index	29.1	22	31.4	61.4	22nd	129th of 911
Income inequality (Gini)	0.400	0.407	0.444	0.483	21st	427th of 908
Population	12,808	25,747	3,210,507	334,922,499	20th	64th of 911
Tech workers	1.2%	1.2%	2.9%	3.8%	17th	369th of 911
Median gross rent	$928	$910	$972	$1,413	16th	230th of 771
Unemployment rateStrength	2.6%	2.2%	3.6%	5.2%	11th	398th of 911
Work from home	5.6%	9.2%	11.3%	15.1%	10th	658th of 911
Population density	55/sq mi	30/sq mi	58/sq mi	95/sq mi	8th	221st of 911
Rent-burdened rentersStrength	30.8%	30.6%	43.9%	51.1%	5th	502nd of 882
Average commuteStrength	16.8 min	19.2 min	19.8 min	26.4 min	3rd	796th of 902

The percentile is the share of Americans who live in a zip code with a lower value, so the 50th percentile is typical. Rank 1 is the highest value in the state. Both include zip codes with at least 100 residents. Strengths and weaknesses mark measures in the best or worst fifth nationally, where higher or lower is clearly better (income, poverty, education, commute, broadband, insurance and similar). Measures like age or density are left unmarked.

People

Age

Under 5

20%

5–17

18–24

13%

25–34

12%

35–44

11%

45–54

13%

55–64

10%

65–74

75+

Median age

Under 18

25.5%

65 and over

17.2%

Race and ethnicity

White84%
Black5%
Hispanic9%
Asian0.1%
Native American0.0%
Pacific Islander0.6%
Other0%
Multiracial2%

Diversity index

29.1

U.S. 61.4

Foreign-born

5.6%

U.S. 14.1%

Born in state

74.8%

Language spoken at home (households)

English only

89%

Spanish

Other Indo-European

0.7%

Asian / Pacific

0.3%

Other

Households

Households: 5,217
Average household size: 2.4
Family households: 65.9%
Married couples: 51.6%
Living alone: 30.7%
Veterans (of adults): 5.6%
Male / female: 50% / 50%

Income and poverty

Household income distribution

<$25k

13%

$25–50k

15%

$50–75k

21%

$75–100k

20%

$100–150k

16%

$150–200k

$200k+

Median household income

51031

$76,525

Plymouth Co.

$83,251

Iowa

$75,059

United States

$80,734

Per capita income

$38,599

U.S. $44,673

Poverty rate

8.3%

U.S. 12.5%

Households earning $150K+

15%

U.S. 23%

Income inequality (Gini)

0.400

U.S. 0.483

Housing

Median home value

51031

$222,800

Plymouth Co.

$228,900

Iowa

$208,000

United States

$332,700

Median gross rent

51031

$928

Plymouth Co.

$910

Iowa

$972

United States

$1,413

Types of housing

Single-family

73%

2–4 units

5–19 units

12%

20+ units

Mobile home

Boat, RV, van

Housing units: 5,461
Owner-occupied: 65.1%
Vacant: 4.5%
Median year built: 1973
Median rooms: 6
Renters paying 30%+ of income: 30.8%
Renters paying 50%+ of income: 15.7%
Home value to income: 2.9× (U.S. 4.1×)

Work and commute

How people get to work

Drove alone

80%

Carpooled

12%

Transit

0.5%

Walked

0.8%

Bicycle

0.3%

Worked from home

Other

0.7%

Commute time (one way)

<10 min

43%

10–19

23%

20–29

13%

30–44

16%

45–59

60+

Average commute

16.8 min

U.S. 26.4 min

Unemployment

2.6%

U.S. 5.2%

In labor force

71.6%

U.S. 63.5%

Jobs and careers

What employed residents do, wherever they work

Occupations

Office and admin

15%

Production

14%

Transportation and moving

11%

Management

Healthcare

Construction and repair

Sales

Food service

Education

Cleaning and personal care

Business and finance

Engineering and science

Legal and social services

Police and fire

Computer and math

Farming, fishing and forestry

0.7%

Arts, media and sports

0.2%

Industries

Manufacturing

24%

Health care and social assistance

13%

Transportation, warehousing and utilities

Education

Retail

Other services

Construction

Agriculture and mining

Finance, insurance and real estate

Admin, support and management

Public administration

Restaurants and hotels

Professional and technical services

Wholesale

Information

Arts and recreation

0.7%

Median earnings per worker

$49,368

U.S. $49,666

Self-employed

10.9%

U.S. 10%

Government workers

12.9%

U.S. 14.5%

Nonprofit workers

11.6%

U.S. 8.8%

Median earnings by type of work

Type of work	51031	U.S.
Management, business, science and arts	$67,164	$74,888
Service	$28,413	$26,804
Sales and office	$46,000	$40,476
Construction and maintenance	$57,500	$49,199
Production and transportation	$50,633	$39,989

Education, internet and health coverage

Highest education (adults 25+)

No diploma

High school

37%

Some college

21%

Associate's

15%

Bachelor's

18%

Graduate

High school graduate or higher: 94.9%
Bachelor's degree or higher: 21.9%
Graduate or professional degree: 4.2%
Households with broadband: 90.3%
Cable, fiber or DSL: 74.3%
No internet access: 7.1%
Without health insurance: 5.8%
Limited-English households: 1.9%

Geography

City (USPS): Le Mars
State: Iowa
County: Plymouth County
Center point: 42.8032° N, 96.1864° W
Land area: 234 sq mi
Water area: under 0.1 sq mi
Time zone: Central Time (UTC-6, UTC-5 in summer)
Zip type: Residential delivery area

51031 spans 2 counties

Plymouth County99% of land
Sioux County1% of land

Cities and towns within this zip

Le Mars4% of zip

Census places overlapping the zip's area. Mail may use a different city name than the municipality.

Zip codes near 51031

Search by radius

Zip	City	Distance	Population	IncomeMedian income	Home value
51008	Brunsville, IA	4.1 mi	210	$45,000	$129,200
51045	Oyens, IA	6.6 mi	66	$113,750	$170,000
51038	Merrill, IA	9.6 mi	1,449	$95,893	$183,100
51036	Maurice, IA	12 mi	445	$122,841	$248,600
51050	Remsen, IA	12 mi	2,962	$92,500	$219,700
51024	Hinton, IA	13 mi	2,081	$114,219	$347,800
51027	Ireton, IA	13 mi	1,280	$100,893	$227,200
51041	Orange City, IA	16 mi	7,324	$83,643	$277,000
51003	Alton, IA	16 mi	1,938	$101,250	$232,700
51028	Kingsley, IA	18 mi	2,191	$78,000	$219,600
51011	Chatsworth, IA	18 mi	54	$44,375	—
51001	Akron, IA	18 mi	2,342	$75,404	$192,700

Zip codes like 51031 elsewhere

Matched on income, home values, age, density, education, housing and commuting

Questions about 51031

What city is zip code 51031?

51031 is assigned to Le Mars, Iowa. The city name is the one the Postal Service prefers for mail addressed to this zip code.

What county is 51031 in?

51031 is mostly in Plymouth County, but it extends into 1 other county.

What is the population of 51031?

About 12,808 people live in 51031, according to the Census Bureau's American Community Survey.

What time zone is 51031 in?

51031 is in Central Time.

What is the median household income in 51031?

The median household income in 51031 is $76,525.

What zip codes are near 51031?

The closest zip codes to 51031 are 51008, 51045, 51038, 51036, 51050.

Demographic figures are 2020–2024 American Community Survey 5-year estimates for ZIP Code Tabulation Area 51031, from the U.S. Census Bureau. Small areas have wide margins of error. How we build these numbers.