What city is ZIP code 78557?

ZIP code 78557 is in Hidalgo, TX (Hidalgo County).

What county is ZIP code 78557 in?

ZIP code 78557 is mostly in Hidalgo County, Texas.

How many people live in ZIP code 78557?

About 14,498 people live in the 78557 ZIP Code Tabulation Area, based on American Community Survey 5-year estimates.

Checked Oct 26, 2026

ZIP Code 78557

Hidalgo, TX, Hidalgo County

Population

14,498

Land area

16.6sq mi

People per sq mi

874

City

Hidalgo

ZIP 78557 and nearby ZIP codes

Full map

ZIP 78557 at a glance

ZIP 78557 (Hidalgo) is about 7.6 times as dense as Texas as a whole.
The median household income is $59,441, 24% below the Texas median of $78,476.
A typical owner-occupied home is valued at $163,600 (42% below Texas) and median rent is $842 a month.

Local data for ZIP 78557

Counts from official public data

Housing and community stats

ZIP 78557, American Community Survey 2020-2024

Full profile

Median household income

$59,441

Poverty rate

21.1%

Median home value

$163,600

Median rent

$842/mo

Homeownership

80.2%

Bachelor's or higher

22.8%

Median age

31.5

Average commute

19.9 min

Income, education and commute

Economy and federal money

Businesses, pandemic loans and political donations

Details

Business establishments

340

ZIP Business Patterns 2023

Employees

3,175

$110M annual payroll

PPP loans

$13.8M

372 loans

Campaign donations

$2,365

81% D, 0% R, 2026 cycle

PPP loans in this ZIP

Environment and hazard risk

ZIP 78557, from FEMA, NOAA and EPA

Full report

Natural hazard risk

Relatively High

Top: cold wave

Storm events since 1996

970

Countywide, mostly drought

Flood insurance policies

9,038

3.7% of homes, county

July high / Jan low

99° / 53°F

22.2 inches of rain a year

Hazards, floods and storm history Check a flood zone

Health statistics

Share of adults in ZIP 78557, CDC PLACES estimates

All 40 measures

Obesity

43.8%

U.S. 33.3% +10.5 pts

Diabetes

16.5%

U.S. 12.1% +4.4 pts

Smoking

12.1%

U.S. 12.8% -0.7 pts

Uninsured (18-64)

36.3%

U.S. 11.1% +25.2 pts

Frequently asked questions

What city is ZIP code 78557?: ZIP code 78557 is in Hidalgo, TX (Hidalgo County).
What county is ZIP code 78557 in?: ZIP code 78557 is mostly in Hidalgo County, Texas.
How many people live in ZIP code 78557?: About 14,498 people live in the 78557 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.