What city is ZIP code 51550?

ZIP code 51550 is in Magnolia, IA (Harrison County).

What county is ZIP code 51550 in?

ZIP code 51550 is mostly in Harrison County, Iowa.

How many people live in ZIP code 51550?

About 169 people live in the 51550 ZIP Code Tabulation Area, based on American Community Survey 5-year estimates.

Checked Oct 26, 2026

ZIP Code 51550

Magnolia, IA, Harrison County

Population

169

Land area

0.5sq mi

People per sq mi

312

City

Magnolia

ZIP 51550 and nearby ZIP codes

Full map

ZIP 51550 at a glance

ZIP 51550 (Magnolia) is about 5.4 times as dense as Iowa as a whole.

Economy and federal money

Businesses, pandemic loans and political donations

Details

PPP loans

$21.3K

3 loans

PPP loans in this ZIP

Environment and hazard risk

ZIP 51550, from FEMA, NOAA and EPA

Full report

Natural hazard risk

Very Low

Top: drought

Storm events since 1996

608

Countywide, mostly hail

Flood insurance policies

177

2.0% of homes, county

July high / Jan low

86° / 10°F

34.4 inches of rain a year

Hazards, floods and storm history Check a flood zone

Health statistics

Share of adults in ZIP 51550, CDC PLACES estimates

All 40 measures

Obesity

36.4%

U.S. 33.3% +3.1 pts

Diabetes

14.0%

U.S. 12.1% +1.9 pts

Smoking

16.7%

U.S. 12.8% +3.9 pts

Uninsured (18-64)

7.1%

U.S. 11.1% -4.0 pts

Frequently asked questions

What city is ZIP code 51550?: ZIP code 51550 is in Magnolia, IA (Harrison County).
What county is ZIP code 51550 in?: ZIP code 51550 is mostly in Harrison County, Iowa.
How many people live in ZIP code 51550?: About 169 people live in the 51550 ZIP Code Tabulation Area, based on American Community Survey 5-year estimates.

Source: U.S. Census Bureau (ZIP Code Tabulation Areas, American Community Survey) · Data as of 12/31/2023. ZIP Code Tabulation Areas closely match, but are not identical to, USPS ZIP code delivery areas.