[4] Eagle Pass borders the city of Piedras Negras, Coahuila, Mexico, which is to the southwest and across the Rio Grande river.

Originally known as Camp Eagle Pass, it served as a temporary outpost for the Texas militia, which had been ordered to stop illegal trade with Mexico during the Mexican–American War.

During the remainder of the 19th century, schools and churches opened, the mercantile and ranching industries grew, and a railway was built.

On April 24, 2007, at 7:00 pm CDT, a tornado tore through outside of Eagle Pass and caused loss of life and property damage.

[8] The City of Eagle Pass was sued by the US government in 2008 to gain access to the land and construct a fence on the United States-Mexico border.

[12] On August 8, 2012, a federal grand jury in the U.S. District Court in Del Rio indicted five Eagle Pass residents, including a former Public Works Department employee, in connection with an estimated $70,000 credit-card fraud scheme.

In some instances, defendants charged individuals a reduced rate for fuel purchased using the city's credit card and then pocketed the cash.

[13] On November 29, 2012, Aguilar entered a guilty plea for the charges of theft and fraud, and on May 15, 2013, was sentenced to 42 months in federal prison and ordered to pay $68,373.87 in restitution for his role in the fraudulent scheme.

[14] On March 30, 2017, Hector Chavez Sr., the former Eagle Pass city manager, pleaded guilty to lying to the FBI regarding a bribery scheme involving public contracts in Maverick County.

The City of Eagle Pass is home to small and large businesses alike, but its primary sectors are retail, import/export, and manufacturing.

The City of Eagle Pass and Maverick County recently adopted matching incentives policies (2020) making it easier for outside businesses to expand operations in the region.

Because of its location along the U.S./Mexico border, the retail sector is healthy due to the large number of visitors Eagle Pass gets from Mexico.

[26] Highways in the area are: In 2000, as part of the power exchange between Texas and Mexico, a high-voltage direct current facility equipped with insulated-gate bipolar transistors was built.

This facility, built for Central Power and Light (now AEP Texas) by the ABB Group, operates at a bipolar voltage of 15.9 kV, and has a maximum transfer rate of 36 megawatts.

The power station enables AEP to purchase electricity from Mexico's Comisión Federal de Electricidad, when needed.