Located East of Harlingen, Texas and 2 miles north of Rio Hondo, Texas, on FM 1420. Camp Phone number = 956 748-2508 - - - Admin. contact = 956 423-0250 Mailing address = Box 956, Rio Hondo, TX 78583 - - - Admin. Addr. = 6912 W. Camp Perry is a Boy Scout Camp located just east of Harlingen, Texas, near Rio Hondo, on the Arroyo Colorado. It is the oldest continuously operated Boy Scout Camp in Texas. It is operated by the Rio Grande Council of BSA, which has its HQ in Harlingen, TX.