Zip code 51433: Auburn, Iowa

Q: What city is zip code 51433?

51433 is assigned to Auburn, Iowa. The city name is the one the Postal Service prefers for mail addressed to this zip code.

Q: What county is 51433 in?

51433 is mostly in Sac County, but it extends into 1 other county.

Q: What is the population of 51433?

About 567 people live in 51433, according to the Census Bureau's American Community Survey.

Q: What is the median household income in 51433?

The median household income in 51433 is $68,125.

Q: What zip codes are near 51433?

The closest zip codes to 51433 are 51449, 51450, 51436, 50561, 51451.

Residential delivery areaSac CountyCentral Time

Population

567

Median household income

$68K

U.S. $81K

Median home value

$153K

U.S. $333K

Median rent

$774/mo

U.S. $1,413

Median age

38.2

U.S. 38.9

Land area

57 sq mi

10 people/sq mi

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

About 51433

51433 is a rural zip code in Auburn, Iowa (Sac County), covering 57 sq mi of land. About 567 people live here, or 10 per square mile. The median resident is 38.2 years old, compared with 38.9 nationally.

The median household earns $68,125 a year, 16% below the national median of $80,734. 20.8% of residents live below the poverty line (U.S.: 12.5%). A typical home is valued at $153,200, or 2.2 years of median household income (U.S.: 4.1 years), which makes homes relatively affordable for local earners. 49% of occupied homes are lived in by their owners, and renters pay a median of $774 a month.

12% of adults hold a bachelor's degree or higher (U.S.: 36%). Commuters average 35.3 minutes each way, and 5% of workers work from home. The most common jobs among working residents are in production and manufacturing; sales; and food service.

How 51433 compares

Sorted from highest to lowest national percentile

Average commute35.3 min
92nd
WeaknessU.S. 26.4 min · IA 19.8 min40th of 902 in IA
Poverty rate20.8%
86th
WeaknessU.S. 12.5% · IA 11.1%63rd of 909 in IA
Self-employed workers11.7%
75th
U.S. 10% · IA 10.2%548th of 911 in IA
Residents under 1824.3%
69th
U.S. 22% · IA 22.9%365th of 911 in IA
Uninsured rate8.1%
60th
U.S. 8.4% · IA 5%128th of 911 in IA
Housing vacancy7%
53rd
U.S. 10.1% · IA 8.5%579th of 909 in IA
Median age38.2
44th
U.S. 38.9 · IA 38.6688th of 911 in IA
Residents 65 and older15.5%
42nd
U.S. 17.2% · IA 18.1%718th of 911 in IA
Median earnings per worker$43,375
34th
U.S. $49,666 · IA $47,712641st of 910 in IA
Median household income$68,125
33rd
U.S. $80,734 · IA $75,059586th of 896 in IA
Per capita income$32,473
26th
U.S. $44,673 · IA $40,877722nd of 911 in IA
Veterans3.3%
18th
U.S. 6.2% · IA 6.5%832nd of 911 in IA
Homeownership rate48.5%
16th
WeaknessU.S. 65.2% · IA 71.7%895th of 909 in IA
Broadband access85.5%
14th
WeaknessU.S. 91% · IA 88.9%634th of 909 in IA
Median home value$153,200
10th
U.S. $332,700 · IA $208,000514th of 881 in IA
Tech workers0.8%
10th
U.S. 3.8% · IA 2.9%459th of 911 in IA
Healthcare workers6.1%
9th
U.S. 9.7% · IA 9.2%669th of 911 in IA
Work from home4.7%
7th
U.S. 15.1% · IA 11.3%716th of 911 in IA
Government workers7.8%
6th
U.S. 14.5% · IA 14.5%773rd of 911 in IA
Median gross rent$774
5th
U.S. $1,413 · IA $972483rd of 771 in IA
Bachelor's degree or higher11.8%
4th
WeaknessU.S. 35.7% · IA 31.4%784th of 911 in IA
Population567
1st
U.S. 334,922,499 · IA 3,210,507640th of 911 in IA
Population density10/sq mi
1st
U.S. 95/sq mi · IA 58/sq mi762nd of 911 in IA
Unemployment rate0.6%
1st
StrengthU.S. 5.2% · IA 3.6%728th of 911 in IA
Diversity index3.1
1st
U.S. 61.4 · IA 31.4828th of 911 in IA
Foreign-born residents0%
1st
U.S. 14.1% · IA 5.9%875th of 911 in IA
Rent-burdened renters8.5%
1st
StrengthU.S. 51.1% · IA 43.9%768th of 882 in IA
Income inequality (Gini)0.335
1st
StrengthU.S. 0.483 · IA 0.444764th of 908 in IA

Measure	51433	Sac	IA	U.S.	National percentile	Rank in IA
Average commuteWeakness	35.3 min	21.7 min	19.8 min	26.4 min	92nd	40th of 902
Poverty rateWeakness	20.8%	9.2%	11.1%	12.5%	86th	63rd of 909
Self-employed workers	11.7%	13.7%	10.2%	10%	75th	548th of 911
Residents under 18	24.3%	21.7%	22.9%	22%	69th	365th of 911
Uninsured rate	8.1%	4.8%	5%	8.4%	60th	128th of 911
Housing vacancy	7%	15.9%	8.5%	10.1%	53rd	579th of 909
Median age	38.2	46.2	38.6	38.9	44th	688th of 911
Residents 65 and older	15.5%	24.3%	18.1%	17.2%	42nd	718th of 911
Median earnings per worker	$43,375	$46,112	$47,712	$49,666	34th	641st of 910
Median household income	$68,125	$73,838	$75,059	$80,734	33rd	586th of 896
Per capita income	$32,473	$40,084	$40,877	$44,673	26th	722nd of 911
Veterans	3.3%	7.7%	6.5%	6.2%	18th	832nd of 911
Homeownership rateWeakness	48.5%	78%	71.7%	65.2%	16th	895th of 909
Broadband accessWeakness	85.5%	84.6%	88.9%	91%	14th	634th of 909
Median home value	$153,200	$141,400	$208,000	$332,700	10th	514th of 881
Tech workers	0.8%	0.6%	2.9%	3.8%	10th	459th of 911
Healthcare workers	6.1%	9.3%	9.2%	9.7%	9th	669th of 911
Work from home	4.7%	4.7%	11.3%	15.1%	7th	716th of 911
Government workers	7.8%	13.2%	14.5%	14.5%	6th	773rd of 911
Median gross rent	$774	$722	$972	$1,413	5th	483rd of 771
Bachelor's degree or higherWeakness	11.8%	22.3%	31.4%	35.7%	4th	784th of 911
Population	567	9,689	3,210,507	334,922,499	1st	640th of 911
Population density	10/sq mi	17/sq mi	58/sq mi	95/sq mi	1st	762nd of 911
Unemployment rateStrength	0.6%	4.4%	3.6%	5.2%	1st	728th of 911
Diversity index	3.1	15.4	31.4	61.4	1st	828th of 911
Foreign-born residents	0%	2.4%	5.9%	14.1%	1st	875th of 911
Rent-burdened rentersStrength	8.5%	32.5%	43.9%	51.1%	1st	768th of 882
Income inequality (Gini)Strength	0.335	0.413	0.444	0.483	1st	764th of 908

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

21%

5–17

18–24

17%

25–34

23%

35–44

45–54

10%

55–64

11%

65–74

75+

Median age

38.2

Under 18

24.3%

65 and over

15.5%

Race and ethnicity

White98%
Black0%
Hispanic2%
Asian0%
Native American0%
Pacific Islander0%
Other0%
Multiracial0%

Diversity index

3.1

U.S. 61.4

Foreign-born

U.S. 14.1%

Born in state

82.5%

Language spoken at home (households)

English only

98%

Spanish

0.4%

Other Indo-European

Asian / Pacific

Other

Households

Households: 227
Average household size: 2.5
Family households: 72.7%
Married couples: 56.8%
Living alone: 23.8%
Veterans (of adults): 3.3%
Male / female: 42% / 58%

Income and poverty

Household income distribution

<$25k

12%

$25–50k

15%

$50–75k

23%

$75–100k

25%

$100–150k

15%

$150–200k

$200k+

Median household income

51433

$68,125

Sac Co.

$73,838

Iowa

$75,059

United States

$80,734

Per capita income

$32,473

U.S. $44,673

Poverty rate

20.8%

U.S. 12.5%

Households earning $150K+

8.8%

U.S. 23%

Income inequality (Gini)

0.335

U.S. 0.483

Housing

Median home value

51433

$153,200

Sac Co.

$141,400

Iowa

$208,000

United States

$332,700

Median gross rent

51433

$774

Sac Co.

$722

Iowa

$972

United States

$1,413

Types of housing

Single-family

95%

2–4 units

5–19 units

20+ units

Mobile home

Boat, RV, van

Housing units: 244
Owner-occupied: 48.5%
Vacant: 7%
Median year built: 1939 or earlier
Median rooms: 6.2
Renters paying 30%+ of income: 8.5%
Renters paying 50%+ of income: 5.7%
Home value to income: 2.2× (U.S. 4.1×)

Work and commute

How people get to work

Drove alone

85%

Carpooled

Transit

Walked

Bicycle

Worked from home

Other

Commute time (one way)

<10 min

10–19

42%

20–29

20%

30–44

0.9%

45–59

60+

29%

Average commute

35.3 min

U.S. 26.4 min

Unemployment

0.6%

U.S. 5.2%

In labor force

83.8%

U.S. 63.5%

Jobs and careers

What employed residents do, wherever they work

Occupations

Production

20%

Sales

14%

Food service

13%

Management

11%

Construction and repair

Education

Healthcare

Office and admin

Transportation and moving

Engineering and science

Cleaning and personal care

Computer and math

0.8%

Legal and social services

0.8%

Business and finance

0.6%

Arts, media and sports

Police and fire

Farming, fishing and forestry

Industries

Manufacturing

31%

Health care and social assistance

15%

Retail

13%

Construction

11%

Restaurants and hotels

Agriculture and mining

Other services

Education

Transportation, warehousing and utilities

Arts and recreation

Public administration

Finance, insurance and real estate

Admin, support and management

0.3%

Wholesale

0.3%

Professional and technical services

Information

Median earnings per worker

$43,375

U.S. $49,666

Self-employed

11.7%

U.S. 10%

Government workers

7.8%

U.S. 14.5%

Nonprofit workers

5.6%

U.S. 8.8%

Median earnings by type of work

Type of work	51433	U.S.
Management, business, science and arts	$53,472	$74,888
Service	$9,400	$26,804
Sales and office	$42,847	$40,476
Construction and maintenance	$38,894	$49,199
Production and transportation	$44,292	$39,989

Education, internet and health coverage

Highest education (adults 25+)

No diploma

High school

33%

Some college

31%

Associate's

17%

Bachelor's

Graduate

High school graduate or higher: 92.6%
Bachelor's degree or higher: 11.8%
Graduate or professional degree: 4.2%
Households with broadband: 85.5%
Cable, fiber or DSL: 52.9%
No internet access: 10.6%
Without health insurance: 8.1%
Limited-English households: 0%

Geography

City (USPS): Auburn
State: Iowa
County: Sac County
Center point: 42.2666° N, 94.8753° W
Land area: 57 sq mi
Water area: 0.4 sq mi
Time zone: Central Time (UTC-6, UTC-5 in summer)
Zip type: Residential delivery area

51433 spans 2 counties

Sac County58% of land
Calhoun County42% of land

Zip codes near 51433

Search by radius

Zip	City	Distance	Population	IncomeMedian income	Home value
51449	Lake City, IA	7.2 mi	1,950	$75,329	$115,800
51450	Lake View, IA	8.2 mi	1,619	$71,875	$184,800
51436	Breda, IA	8.5 mi	815	$61,926	$222,100
50561	Lytton, IA	11 mi	585	$67,446	$77,800
51451	Lanesboro, IA	11 mi	74	$43,750	$68,800
51452	Lidderdale, IA	11 mi	177	$60,625	$123,400
51466	Wall Lake, IA	12 mi	1,043	$71,579	$179,600
50583	Sac City, IA	13 mi	2,288	$62,981	$144,700
51401	Carroll, IA	14 mi	11,990	$70,702	$195,700
51430	Arcadia, IA	15 mi	1,063	$76,250	$146,300
50579	Rockwell City, IA	15 mi	3,034	$61,108	$126,000
50551	Jolley, IA	16 mi	96	—	$51,100

Questions about 51433

What city is zip code 51433?

51433 is assigned to Auburn, Iowa. The city name is the one the Postal Service prefers for mail addressed to this zip code.

What county is 51433 in?

51433 is mostly in Sac County, but it extends into 1 other county.

What is the population of 51433?

About 567 people live in 51433, according to the Census Bureau's American Community Survey.

What time zone is 51433 in?

51433 is in Central Time.

What is the median household income in 51433?

The median household income in 51433 is $68,125.

What zip codes are near 51433?

The closest zip codes to 51433 are 51449, 51450, 51436, 50561, 51451.

Demographic figures are 2020–2024 American Community Survey 5-year estimates for ZIP Code Tabulation Area 51433, from the U.S. Census Bureau. Small areas have wide margins of error. How we build these numbers.