US ZIP Code
51301

Spencer, IA

Clay County  ·  Iowa

● Active
👥 12,402 Population
💰 $61,175 Median HH Income
▼ 20% below avg ↑ 29% since 2019
🎂 41.5 Median Age ↓ 5% since 2019
🏠 $180,400 Median Home Value
▼ 35% below avg ↑ 37% since 2019
🎓 41.2% College Grads
≈ Avg
📊 4.7% Unemployment
≈ Avg ↑ 2% since 2019
ZIP Code Details
ZIP Code51301
CitySpencer
StateIowa (IA)
CountyClay County
Area Code712
Elevation1,303 ft
Latitude43.153092
Longitude-95.149793
TimezoneChicago (DST)
FIPS19041
ZIP TypeStandard
StatusActive
People & Population (ACS 2023)
♂ Male 48.1% (5,964) Female 51.9% (6,438) ♀

Race & Ethnicity

White: 90.7%Hispanic: 5.1%Black: 0.6%Asian: 0.4%Other: 2.6%Race
White90.7%
Hispanic5.1%
Black0.6%
Asian0.4%
Other2.6%

Age Breakdown

Under 5
5%
5–17
18%
18–24
7%
25–44
24%
45–64
24%
65+
9%

Key Indicators

Median Age41.5 yrs ↓ 5% since 2019
Avg Household Size2.17
Below Poverty12.7% ▲ 27% above avg
College Grads41.2% ≈ Avg
Unemployment4.7% ≈ Avg
No HS Diploma60 (0.7%)
HS Graduate2,703 (32.1%)
Some College1,192 (14.2%)
Associates1,000 (11.9%)
Bachelors1,093 (13%)
Graduate Degree2,374 (28.2%)

Education

No HS: 0.7%HS Grad: 32.1%Some College: 14.2%Associates: 11.9%Bachelors: 13%Graduate: 28.2%Edu
No HS0.7%
HS Grad32.1%
Some College14.2%
Associates11.9%
Bachelors13.0%
Graduate28.2%
Housing & Income

Housing Tenure

Owner: 69.5%Renter: 30.5%Tenure
Owner69.5%
Renter30.5%

Home Value Distribution

Under $50k
3%
$50k–100k
13%
$100k–150k
22%
$150k–200k
21%
$200k–300k
22%
$300k–500k
16%
Over $500k
2%

Financials

Median HH Income$61,175 ▼ 20% below avg ↑ 29% since 2019
Median Home Value$180,400 ▼ 35% below avg ↑ 37% since 2019
Home/Income Ratio2.9x (nat avg ~3.5x)
Median Rent$796/mo ↑ 15% since 2019
Total Units6,096
Vacant Units540
Avg HH Size2.17

Income Distribution

Under $25k
19%
$25k–50k
19%
$50k–75k
17%
$75k–100k
14%
$100k–150k
19%
$150k–200k
8%
Over $200k
4%
Employment & Commute

How People Get to Work

Drove Alone
86%
Public Transit
2%
Walked
5%
Work From Home
7%

Commute Time

Under 15 min
69%
15–30 min
11%
30–45 min
9%
Over 45 min
10%
Housing Stock

Year Built

Before 1940
3%
1940s–1950s
14%
1960s–1970s
15%
1980s–1990s
9%
2000+
59%

Summary

Total Units6,096
Vacant540
Owner Occupied69.5%
Renter Occupied30.5%
Avg HH Size2.17
Frequently Asked Questions
ZIP code 51301 is in Spencer, IA, in Clay County.
ZIP code 51301 is located in Iowa (IA).
ZIP code 51301 is in Clay County, IA.
ZIP 51301 observes the Chicago timezone. Daylight Saving Time is observed.
The estimated population of ZIP code 51301 is 12,402 people (ACS 2023).
The median household income in ZIP code 51301 is $61,175 (ACS 2023).
The median home value in ZIP 51301 is $180,400 (ACS 2023).
About ZIP Code 51301

ZIP code 51301 is located in Spencer, Iowa, within Clay County. With a population of 12,402, this is a lightly populated ZIP code with a middle-aged community — the median age is 41.5 years. Economically, 51301 is a solidly middle-class ZIP code: the median household income of $61,175 is below the national average.

Real estate in ZIP code 51301 represents an affordable housing market. The median home value of $180,400 is below the national average. Renters can expect to pay around $796 per month in median rent. Homeownership is strong here — 69.5% of occupied units are owner-occupied, suggesting an established, stable residential community. Median home values have increased by 37% since 2019.

The population of 51301 is primarily White (90.74%). Residents are well-educated — 41.2% hold a bachelor's degree or higher, which is near the national average. Poverty affects some residents at 12.7%. Household income has grown by 29% since 2019.

The unemployment rate in 51301 stands at 4.7%, which is near the national average. As in most parts of the country, driving alone is the dominant commute mode at 79%.

Overall, ZIP code 51301 in Spencer, IA is characterized as solidly middle-class, well-educated, a middle-aged community, and predominantly owner-occupied. With 12,402 residents, a median household income of $61,175, and a median home value of $180,400, it offers a clear picture of life in this part of Iowa.