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Binational Population Data in Sister Cities along the Rio Grande in Texas

Population has grown significantly in the sister cities along the Rio Grande, which forms the border between Texas and four Mexican states.

Population growth in the sister cities that straddle the Rio Grande, which forms the border between Texas and its four neighboring Mexican states—Chihuahua, Coahuila, Nuevo León, and Tamaulipas—has been significant in recent decades.

The table and bar chart below show the data for seven sister-city pairs for the period 2000-2020 (see map of the Texas/ Mexico border).


Population Growth in Sister Cities along the Texas-Mexico Border

City/Municipio, State
(arranged by sister-city pairs)

2000 Population (Census)

2010 Population (Census)

2000-2010
% Increase

2020 Population (Census)

2010-2020
% Increase

El Paso, Texas MSA*
679,622
800,647
17.8
868,859
8.5
Ciudad Juárez, Chihuahua
1,217,818
1,332,131
9.4
1,512,450
13.5
Presidio, Texas
4,167
4,426
6.2
3,264
-26.3
Ojinaga, Chihuahua
24,313
26,304
8.2
24,534
-6.7
Del Rio, Texas
33,867
35,591
5.1
34,653
-2.6
Ciudad Acuña, Coahuila
110,388
136,755
23.9
160,220
17.2
Eagle Pass, Texas
22,413
26,248
17.1
28,130
7.2
Piedras Negras, Coahuila
127,898
152,806
19.5
173,959
13.9
Laredo, Texas MSA*
193,117
250,304
29.6
255,205
2.0
Nuevo Laredo, Tamaulipas
310,277
384,033
23.8
425,058
10.7
McAllen-Edinburg-Mission, Texas MSA*
569,463
774,769
36.1
872,856
12.7
Reynosa, Tamaulipas
419,776
608,891
45.0
671,000
10.3
Brownsville-Harlingen-San Benito, Texas MSA*
335,227
406,220
21.2
421,480
3.8
Matamoros, Tamaulipas
416,428
489,193
17.5
541,979
10.8
All seven Texas population centers
1,837,876
2,298,205
25.0
2,484,447
8.1
All seven Mexican population centers
2,626,898
3,130,113
19.2
3,509,200
12.1
Total of seven sister-city pairs
4,464,774
5,428,318
21.6
5,993,647
10.4
For Comparison - State of Texas
20,851,820
25,145,561
20.5
29,145,505
15.9

Chart showing total population in sister cities along the Texas-Mexico border


* When a U.S. city has significant numbers of people living near but not in the city, a metropolitan statistical area (MSA) is delineated, with boundaries beyond the jurisdiction of the city, and populations are determined for those full MSAs. In this table, MSAs are used instead of cities for those population centers where appropriate. In Mexico, the only subdivision of a state is a municipio; municipios (municipality/city) are the only unit of local government and together they cover the entire state. In most cases, a municipio is self-contained with respect to population.

Sources: Data on Texas cities and MSAs were obtained from the website of CensusScope , accessed on March 3, 2025 except for Presidio, which was obtained at the website of the Texas Data Center also accessed on March 3, 2025. Data on Mexican municipios were obtained from the website of the Instituto Nacional de Estadística y Geografía , accessed on March 3, 2025.

Population has grown significantly in the sister cities along the binational Rio Grande, which forms the border between Texas and four Mexican states.