51366 ZIP Code — Webb, IA

Clay County, Iowa

ZIP code 51366 is located in Webb, Iowa, within Clay County. It covers approximately 62.33 square miles and serves a population of 303 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 712.

About ZIP code 51366

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 $111,500. Owner-occupancy is high at 84%, well above the national average.

The gap between median ($76,667) and mean household income suggests income inequality — a small number of higher earners pull the average up. 44% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with agriculture and mining as the leading industry. The average commute of 23 minutes is near the national average. Remote work is prevalent — 29% of workers work from home.

College attainment at 13% is below the national average, consistent with a trades and production-oriented local economy.

Notable community characteristics include a notable veteran presence at 16% of civilians, above the national average of 7%.

Overall, ZIP code 51366 reflects a community defined by a trades-oriented workforce, a strong veteran community, high homeownership, a high rate of remote workers, and a significant Social Security-dependent population.

303

population

62.33

sq mi land

Standard

ZIP type

Central (CT)

timezone

51366 ZIP code map

Cities in ZIP code 51366

Below are the cities the US Postal Service accepts for ZIP code 51366. Using any city not on this list may result in mail delivery delays.

City	Status
Webb	Preferred

Nearby ZIP codes

50515 Ayrshire (7.5 mi) 50565 Marathon (7.5 mi) 50585 Sioux Rapids (7.7 mi) 50527 Curlew (10.6 mi) 51333 Dickens (12 mi) 51033 Linn Grove (13.1 mi) 50554 Laurens (13.2 mi) 50576 Rembrandt (13.4 mi) 51301 Spencer (13.6 mi) 51358 Ruthven (13.6 mi) 51357 Royal (14.4 mi) 50510 Albert City (14.6 mi)

Demographics updated 05/2026

Population
Total population	303
Population density	5 / sq mi
State FIPS	19
County FIPS	041

Geography
Land area	62.33 sq mi
Water area	0.05 sq mi
Latitude	42.9672
Longitude	-95.0158
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	35.3%	48.3%	40.1%
$50k – $100k	27.2%	32.6%	33.4%
$100k – $200k	30.9%	16.4%	21.5%
Over $200k	6.6%	2.7%	5.0%

Demographics & statistics

303

Population

People per sq mi

56.1

Median age

$76,667

Median household income

$42,874

Per capita income

$111,500

Median home value

Median monthly rent

84.4%

Home ownership

1.7%

Poverty rate

0.0%

Unemployment

141

Housing units

13.1%

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	52	17.2%
18 and over	251	82.8%
65 and over	78	25.7%
Median age	56.1 years

Race & ethnicity

White 99.3%

Hispanic or Latino 0.3%

Two or more races 0.3%

Group	Count	%
White	302	99.3%
Hispanic or Latino	1	0.3%
Two or more races	1	0.3%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	35.3%	48.3%	40.1%
$50k – $100k	27.2%	32.6%	33.4%
$100k – $200k	30.9%	16.4%	21.5%
Over $200k	6.6%	2.7%	5.0%

Under $10k 2.3%

$15k–$25k 10.2%

$25k–$35k 4.7%

$35k–$50k 19.5%

$50k–$75k 11.7%

$75k–$100k 8.6%

$100k–$150k 21.1%

$150k–$200k 8.6%

$200k+ 13.3%

Range	% of households
Under $10k	2.3%
$15k–$25k	10.2%
$25k–$35k	4.7%
$35k–$50k	19.5%
$50k–$75k	11.7%
$75k–$100k	8.6%
$100k–$150k	21.1%
$150k–$200k	8.6%
$200k+	13.3%
Median income	$76,667

Housing

Home values

Under $50k 17.6%

$50k–$100k 22.2%

$100k–$150k 22.2%

$150k–$200k 2.8%

$200k–$300k 17.6%

$300k–$500k 17.6%

Housing overview

Metric	Value
Median home value	$111,500
Median rent / month	$0
Owner occupied	84.4%
Renter occupied	15.6%
Vacant	20.5%
Single-family detached	94.4%
Large apartment buildings	3.1%
Mobile homes	0.0%
Median rooms	7.0
Avg household size (owned)	2.50

Year built

Era	%
2020 or later	0.0%
2010–2019	1.2%
2000–2009	0.0%
1990–1999	2.5%
1980–1989	16.8%
1970–1979	14.3%
1960–1969	6.2%
1950–1959	9.3%
1940–1949	6.8%
1939 or earlier	42.9%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	6.8%
2 bedrooms	15.5%
3 bedrooms	43.5%
4 bedrooms	26.7%
5+ bedrooms	7.5%

Vehicles per household

Vehicles	% of households
No vehicle	0.8%
1 vehicle	30.5%
2 vehicles	42.2%
3 or more	26.6%

Heating fuel

Fuel type	%
Electricity	25.8%
Propane / LP gas	60.9%
Fuel oil	3.1%
No fuel used	8.6%

Households & families

Household type	Count	%
Married-couple family	87	68.0%
Cohabiting couple	2	1.6%
Male householder, no spouse	14	10.9%
Female householder, no spouse	25	19.5%
Households with children under 18	25	19.5%
Households with seniors (65+)	55	43.0%
Average household size	2.37

Marital status

Status	Male	Female
Never married	20.9%	12.0%
Married	67.2%	68.8%
Separated	0.0%	0.0%
Widowed	1.5%	13.6%
Divorced	10.4%	5.6%

Education

Less than 9th grade 8.6%

Some HS, no diploma 15.7%

HS graduate 30.3%

Some college, no degree 16.7%

Associate's degree 15.7%

Bachelor's degree 10.1%

Graduate / professional 3.0%

Metric	%
HS diploma or higher	75.8%
Bachelor's or higher	13.1%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	6	25.0%
Kindergarten	0	0.0%
Elementary school	8	33.3%
High school	7	29.2%
College / grad school	3	12.5%

Employment

Industry of employment

Agriculture & mining 38.3%

Education & healthcare 16.4%

Retail trade 14.1%

Manufacturing 12.5%

Transportation & utilities 12.5%

Construction 2.3%

Wholesale trade 1.6%

Professional & management 1.6%

Other services 0.8%

Occupation

Category	%
Management, business & arts	49.2%
Service	5.5%
Sales & office	2.3%
Natural resources & construction	3.1%
Production & transportation	39.8%

Employment type

Type	%
Private sector	74.2%
Government	3.1%
Self-employed	22.7%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	64.1%
Carpool	2.3%
Public transit	0.0%
Walk	0.8%
Work from home	28.9%
Other means	3.9%
Avg commute (minutes)	23.0

Poverty

All people 1.7%

Under 18 years 0.0%

18 and over 2.0%

Married-couple families 0.0%

Female-led households 0.0%

Income support

Source	% of households
Social Security	43.8%
Retirement income	33.6%
Supplemental Security	5.5%
Cash public assistance	0.0%
Food stamps / SNAP	1.6%

Health indicators

Condition	%
Obesity	39.2%
High blood pressure	36.4%
High cholesterol	36.6%
Diabetes	11.1%
Heart disease	7.8%
Stroke	3.5%
Asthma	9.2%
Arthritis	29.2%
Kidney disease	3.3%
Pulmonary disease	7.6%
Cancer	8.6%

Behavior / access	%
Smoking	16.3%
Binge drinking	20.1%
No physical activity	24.8%
Less than 7 hrs sleep	30.6%
Depression	17.4%
Fair or poor health	13.5%
Poor mental health	12.6%
Poor physical health	10.2%
No health insurance	8.7%
Visited doctor (checkup)	76.6%
Visited dentist	67.3%
Cholesterol screening	90.6%
Teeth loss	12.6%

Veterans & disability

Veterans	Count	%
Civilian veterans	40	15.9%

Disability	%
Any disability	21.5%
Under 18	0.0%
18–64 years	9.8%
65 and over	61.5%

Health insurance coverage

Type	%
Private insurance	70.0%
Public insurance	38.6%
No insurance	5.6%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	278	91.7%
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)	303	100.0%
Born in same state	299	98.7%
Born in different state	229	75.6%
Foreign born	4	1.3%
Naturalized citizen	0	0.0%
Not a US citizen	0	0.0%

Ancestry

Ancestry	Count	%
English	29	9.6%
Dutch	21	6.9%
Italian	19	6.3%

Ancestry	Count	%
Polish	19	6.3%
French	17	5.6%
Arab	3	1%

Technology access

Metric	% of households
Computer access	42.2%
Internet access	93.8%

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

Frequently asked questions about ZIP code 51366

What city is ZIP code 51366 in?

ZIP code 51366 is primarily assigned to Webb, Iowa.

What county is ZIP code 51366 in?

ZIP code 51366 falls within Clay County, Iowa.

Does ZIP code 51366 have an older population?

26% of residents in ZIP code 51366 are 65 or older, above the national average of ~17%.

How educated is the population of ZIP code 51366?

13% 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 51366 mostly owner-occupied?

84% of occupied units in ZIP code 51366 are owner-occupied, well above the national average.

Does ZIP code 51366 have a large retiree population?

44% of households in ZIP code 51366 receive Social Security income, suggesting a significant retiree or disability population.

What timezone is ZIP code 51366 in?

ZIP code 51366 observes the CST timezone.