51033 ZIP Code — Linn Grove, IA

Buena Vista County, Iowa

ZIP code 51033 is located in Linn Grove, Iowa, within Buena Vista County. It covers approximately 61.49 square miles and serves a population of 460 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 712.

About ZIP code 51033

The housing stock consists of predominantly single-family detached homes. Most homes were built in the pre-1940, giving the area an established character. Owner-occupancy is high at 82%, well above the national average.

Median household income is $50,515. The poverty rate of 5% is below the national average. 50% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is production, transportation, and material moving, with agriculture and mining as the leading industry. The average commute of 21 minutes is near the national average.

College attainment at 15% is below the national average, consistent with a trades and production-oriented local economy.

16% of residents lack health insurance, above the national average.

Overall, ZIP code 51033 reflects a community defined by a trades-oriented workforce, high homeownership, and a significant Social Security-dependent population.

460

population

61.49

sq mi land

Standard

ZIP type

Central (CT)

timezone

51033 ZIP code map

Cities in ZIP code 51033

Below are the cities the US Postal Service accepts for ZIP code 51033. Using any city not on this list may result in mail delivery delays.

City	Status
Linn Grove	Preferred

Nearby ZIP codes

50585 Sioux Rapids (5.5 mi) 51047 Peterson (6.3 mi) 50576 Rembrandt (8.1 mi) 51357 Royal (11 mi) 51058 Sutherland (11.6 mi) 51366 Webb (13.1 mi) 50565 Marathon (13.3 mi) 51029 Larrabee (14.5 mi) 51002 Alta (14.8 mi) 51005 Aurelia (15.6 mi) 50510 Albert City (16.5 mi) 51301 Spencer (17.1 mi)

Demographics updated 05/2026

Population
Total population	460
Population density	7 / sq mi
State FIPS	19
County FIPS	021

Geography
Land area	61.49 sq mi
Water area	0.05 sq mi
Latitude	42.9027
Longitude	-95.2596
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	62.0%	47.2%	40.1%
$50k – $100k	30.6%	31.8%	33.4%
$100k – $200k	6.0%	18.4%	21.5%
Over $200k	1.4%	2.6%	5.0%

Demographics & statistics

460

Population

People per sq mi

52.2

Median age

$50,515

Median household income

$31,571

Per capita income

Median home value

$1,133

Median monthly rent

81.9%

Home ownership

5.4%

Poverty rate

1.4%

Unemployment

189

Housing units

14.9%

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	103	22.4%
18 and over	357	77.6%
65 and over	133	28.9%
Median age	52.2 years

Race & ethnicity

White 82%

Hispanic or Latino 8%

Other race 7%

American Indian / Alaska Native 1.6%

Two or more races 1.4%

Group	Count	%
White	410	82%
Hispanic or Latino	40	8%
Other race	35	7%
American Indian / Alaska Native	8	1.6%
Two or more races	7	1.4%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	62.0%	47.2%	40.1%
$50k – $100k	30.6%	31.8%	33.4%
$100k – $200k	6.0%	18.4%	21.5%
Over $200k	1.4%	2.6%	5.0%

$10k–$15k 6.5%

$15k–$25k 0.9%

$25k–$35k 32.1%

$35k–$50k 8.8%

$50k–$75k 20.9%

$75k–$100k 13.5%

$100k–$150k 14.0%

$150k–$200k 0.9%

$200k+ 2.3%

Range	% of households
$10k–$15k	6.5%
$15k–$25k	0.9%
$25k–$35k	32.1%
$35k–$50k	8.8%
$50k–$75k	20.9%
$75k–$100k	13.5%
$100k–$150k	14.0%
$150k–$200k	0.9%
$200k+	2.3%
Median income	$50,515

Housing

Home values

Under $50k 11.9%

$50k–$100k 27.3%

$100k–$150k 13.6%

$150k–$200k 9.7%

$200k–$300k 32.4%

$500k–$1M 2.8%

$1M+ 2.3%

Housing overview

Metric	Value
Median home value	$0
Median rent / month	$1,133
Owner occupied	81.9%
Renter occupied	18.1%
Vacant	5.7%
Single-family detached	99.6%
Large apartment buildings	0.0%
Mobile homes	0.0%
Median rooms	6.9
Avg household size (owned)	1.97

Year built

Era	%
2020 or later	0.0%
2010–2019	0.0%
2000–2009	0.0%
1990–1999	0.0%
1980–1989	6.6%
1970–1979	19.7%
1960–1969	7.0%
1950–1959	21.5%
1940–1949	8.8%
1939 or earlier	36.4%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	10.1%
2 bedrooms	13.6%
3 bedrooms	47.4%
4 bedrooms	21.1%
5+ bedrooms	7.9%

Vehicles per household

Vehicles	% of households
No vehicle	0.0%
1 vehicle	34.4%
2 vehicles	27.9%
3 or more	37.7%

Heating fuel

Fuel type	%
Utility gas	23.3%
Electricity	28.4%
Propane / LP gas	44.7%
Fuel oil	0.9%
Wood	2.8%

Households & families

Household type	Count	%
Married-couple family	101	47.0%
Cohabiting couple	9	4.2%
Male householder, no spouse	45	20.9%
Female householder, no spouse	60	27.9%
Households with children under 18	49	22.8%
Households with seniors (65+)	104	48.4%
Average household size	2.14

Marital status

Status	Male	Female
Never married	26.4%	15.5%
Married	56.0%	54.5%
Separated	1.6%	1.4%
Widowed	2.2%	21.6%
Divorced	13.7%	7.0%

Education

Less than 9th grade 6.1%

Some HS, no diploma 8.5%

HS graduate 26.9%

Some college, no degree 33.9%

Associate's degree 9.6%

Bachelor's degree 13.5%

Graduate / professional 1.5%

Metric	%
HS diploma or higher	85.4%
Bachelor's or higher	14.9%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	12	14.3%
Kindergarten	5	6.0%
Elementary school	16	19.0%
High school	45	53.6%
College / grad school	6	7.1%

Employment

Industry of employment

Agriculture & mining 20.8%

Wholesale trade 17.9%

Education & healthcare 16.0%

Retail trade 14.6%

Transportation & utilities 6.1%

Construction 5.7%

Professional & management 5.2%

Finance & real estate 4.7%

Public administration 4.7%

Manufacturing 3.8%

Information 0.5%

Occupation

Category	%
Management, business & arts	26.4%
Service	17.9%
Sales & office	4.2%
Natural resources & construction	20.8%
Production & transportation	30.7%

Employment type

Type	%
Private sector	62.7%
Government	17.0%
Self-employed	16.0%
Unpaid family workers	4.2%

Commute

Method	%
Drive alone	79.2%
Carpool	7.1%
Public transit	0.0%
Walk	0.0%
Work from home	13.7%
Other means	0.0%
Avg commute (minutes)	21.3

Poverty

All people 5.4%

Under 18 years 5.8%

18 and over 5.3%

Married-couple families 0.0%

Female-led households 26.7%

Income support

Source	% of households
Social Security	50.2%
Retirement income	14.4%
Supplemental Security	0.0%
Cash public assistance	4.2%
Food stamps / SNAP	7.0%

Health indicators

Condition	%
Obesity	35.4%
High blood pressure	35.5%
High cholesterol	35.5%
Diabetes	11.1%
Heart disease	7.5%
Stroke	3.5%
Asthma	9.3%
Arthritis	27.1%
Kidney disease	3.2%
Pulmonary disease	7.9%
Cancer	7.6%

Behavior / access	%
Smoking	19.0%
Binge drinking	19.8%
No physical activity	26.0%
Less than 7 hrs sleep	30.5%
Depression	17.4%
Fair or poor health	14.5%
Poor mental health	13.3%
Poor physical health	10.9%
No health insurance	9.5%
Visited doctor (checkup)	76.2%
Visited dentist	65.9%
Cholesterol screening	89.8%
Teeth loss	15.1%

Veterans & disability

Veterans	Count	%
Civilian veterans	33	9.2%

Disability	%
Any disability	19.3%
Under 18	0.0%
18–64 years	12.5%
65 and over	45.9%

Health insurance coverage

Type	%
Private insurance	71.5%
Public insurance	32.8%
No insurance	16.1%
Uninsured under 19	30.9%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	429	93.3%
Spanish	25	5.8%
Other Indo-European	25	5.8%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	423	92.0%
Born in same state	423	92.0%
Born in different state	383	83.3%
Foreign born	0	0.0%
Naturalized citizen	37	8.0%
Not a US citizen	1	2.7%

Ancestry

Ancestry	Count	%
Dutch	94	20.4%
Italian	38	8.3%
Polish	37	8%

Ancestry	Count	%
Arab	21	4.6%
French	6	1.3%
English	1	0.2%

Technology access

Metric	% of households
Computer access	46.7%
Internet access	76.7%

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

Frequently asked questions about ZIP code 51033

What city is ZIP code 51033 in?

ZIP code 51033 is primarily assigned to Linn Grove, Iowa.

What county is ZIP code 51033 in?

ZIP code 51033 falls within Buena Vista County, Iowa.

Does ZIP code 51033 have an older population?

29% of residents in ZIP code 51033 are 65 or older, above the national average of ~17%.

Does ZIP code 51033 have a large retiree population?

50% of households in ZIP code 51033 receive Social Security income, suggesting a significant retiree or disability population.

How educated is the population of ZIP code 51033?

15% of residents hold a bachelor's degree or higher — below the national average of ~33%, consistent with a trades-oriented local economy.

Is ZIP code 51033 mostly owner-occupied?

82% of occupied units in ZIP code 51033 are owner-occupied, well above the national average.

What timezone is ZIP code 51033 in?

ZIP code 51033 observes the CST timezone.