Introduction to Mercedes, Texas

Mercedes, Texas, in Hidalgo county, is 13 miles W of Harlingen, Texas (center to center) and 118 miles S of Corpus Christi, Texas. It is part of the surrounding McAllen - Edinburg - Mission metro area.

Mercedes History

This region was originally settled by ranchers in the late 1770s. It was a part of the Llano Grande Spanish land grant that was issued to Juan José Ynojosa de Balli on May 29, 1790. For a major part of the 19th and early 20th century, the area was owned by the family of Ramón and Manuel Cavazos. The Capisallo Town and Improvement Company was formed by Lon C. Hill, Jr. on May 29, 1904, and he developed a community which was named "Lonsboro." Hill's company was taken over by American Rio Grande Land and Irrigation Company, and they renamed the community "Diaz." This name was changed a few times until the area was christened "Mercedes". According to some records, this name was in honor of Mercedes Diaz, the Mexican President Porfirio Diaz's wife. The city was officially established on September 15, 1907, and incorporated on March 8, 1909.

Mercedes and Nearby Attractions

  • Weslaco Bicultural Museum
  • Port Isabel Lighthouse State Historic Site
  • Santa Ana National Wildlife Refuge
  • International Museum of Art & Science
  • Bentsen Rio Grande Valley State Park
  • Gladys Porter Zoo

Things To Do In Mercedes

The city of Mercedes offers easy access to the Weslaco Bicultural Museum which features exhibits on the history of the Weslaco and Rio Grande Valley, and the International Museum of Art & Science which houses collections of fine art, and Latin American folk art. Port Isabel Lighthouse State Historic Site, which marks the site of a lighthouse constructed in 1852, is of historic significance. Opportunities to play golf are available at the Llano Grande Country Club, and The Palms at Mid Valley. Visitors can enjoy fishing, boating, hiking, camping, and picnicking at the Bentsen Rio Grande Valley State Park. Residents of Mercedes also organize annual events like the Passport Fair, Texas Street Festival, and Rio Grande Livestock Show & Rodeo.

Mercedes Transportation

Valley International Airport is the nearest major airport.

Mercedes Higher Education

The University of Texas-Pan American, Texas State Technical College-Harlingen, and South Texas Community College are some of the colleges near Mercedes.


Total Population 16,425
Male Share of the Population 48.6%
Female Share of the Population 51.4%
Senior Citizens 14%
Employed Population 16+ 5,104
Age of the Population 30


% of people married 44.5%
Average household size 4

Education and Earnings

Population % with Bachelor Degree or Higher 13.8%
Median Earnings25+ $0
Median Earnings Without High School Qualification $0
Median Earnings With High School Degree $0


Median Family Income $34,213
% Above Poverty Level 60.1%
% Below Poverty Level 39.9%

Commute & Sprawl

Average Commute Time 20 minutes
% Working from Home 2.8%
% Walking and Biking to Work 1.4%
% Using Public Transportation %


People Living Alone 20%
Median Gross Rent $516
Median House Value $60,100


Other(often includes Hispanic and African American) 89.8%
US/American 0%
English 0.4%
Irish 1.3%

Source: American Community Survey, U.S. Census Bureau, 2015, www.census.gov/programs-surveys/acs/.

Mercedes Almanac

Category Value
Nearest Medium City 13 miles W of Harlingen, Texas (center to center)
Nearest Large City 118 miles S of Corpus Christi, Texas
County Hidalgo
Metro Area McAllen - Edinburg - Mission
Standard Zip Codes 78570
Phone Area Codes 956
Time Zone Central (-6 hours from GMT)
Daylight Savings The city observes Daylight Saving Time.
Latitude 26.149
Longitude -97.913

Mercedes Climate

Nearest Weather Stations


  • Temp ranges are avg daily min and max for the month
  • Precipitation is rainfall (and rainfall equiv of snowfall)

Station WESLACO 2 E
Distance 3.3 miles
Jan Temp 48 to 69 F
Apr Temp 64 to 85 F
Jul Temp 74 to 95 F
Oct Temp 64 to 86 F
Annual Precip 25.3 inches
Distance 8.6 miles
Jan Temp 48 to 69 F
Apr Temp 63 to 85 F
Jul Temp 75 to 96 F
Oct Temp 64 to 86 F
Annual Precip 21.4 inches
Distance 15.7 miles
Jan Temp 48 to 69 F
Apr Temp 64 to 84 F
Jul Temp 74 to 95 F
Oct Temp 64 to 85 F
Annual Precip 28.1 inches

Neighborhood and Nearby Area Names

According to the US Postal Service, Mercedes, its neighborhoods, and/or surrounding areas are also referred to as:

Rio Rico (78570)

Thayer (78570)

Note that not all alternate names are acceptable for use in US Post Office addresses.

Nearby Cities and Towns

Location Population Median Family Income
Donna 16,292 $34,969

Source: American Community Survey, U.S. Census Bureau, 2015, www.census.gov/programs-surveys/acs/.

Mercedes Public Libraries

Mercedes Memorial Library
Mercedes, Texas
(956) 565-2371

library logo

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Mercedes High Schools

(Sorted by Number of Students)

A Title I School.
Serves 1,197 students.
Student/teacher ratio: 12.5

A Vocational School
A Title I School.
Serves 690 students.
Student/teacher ratio: 13.9

A Title I School.
Serves 587 students.
Student/teacher ratio: 13.4

206 E 6TH ST
A Non-traditional School
A Title I School.
Serves 103 students.
Student/teacher ratio: 22.4

103 E 2ND ST
A Non-traditional School
A Charter School.
A Title I School.
Serves 51 students.
Student/teacher ratio: 46.4

A Non-traditional School
Serves 45 students.
Student/teacher ratio: 19.6

Study Online in Mercedes
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Info for Mercedes Government Officials

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