Greece, NY (CDP, FIPS 30279) Location: 43.21194 N, 77.70234 W
Population (1990): 15632 (6116 housing units)
Area: 11.3 sq km (land), 0.0 sq km (water)
Zip code(s): 14616

Rio Grande, NJ (CDP, FIPS 63180) Location: 39.02197 N, 74.87772 W
Population (1990): 2505 (1252 housing units)
Area: 6.1 sq km (land), 0.1 sq km (water)
Zip code(s): 08242

Rio Rancho, NM (city, FIPS 63530) Location: 35.27342 N, 106.66044 W
Population (1990): 32505 (12325 housing units)
Area: 118.3 sq km (land), 0.2 sq km (water)
Zip code(s): 87124

Rio Oso, CA Zip code(s): 95674

Rio Linda, CA (CDP, FIPS 60942) Location: 38.68760 N, 121.45818 W
Population (1990): 9481 (3288 housing units)
Area: 14.2 sq km (land), 0.0 sq km (water)
Zip code(s): 95673

Rio Hondo, TX (city, FIPS 62180) Location: 26.23430 N, 97.58262 W
Population (1990): 1793 (613 housing units)
Area: 3.4 sq km (land), 0.3 sq km (water)
Zip code(s): 78583

Rio Vista, CA (city, FIPS 60984) Location: 38.16507 N, 121.69468 W
Population (1990): 3316 (1406 housing units)
Area: 4.7 sq km (land), 0.5 sq km (water)
Zip code(s): 94571

Rio Frio, TX Zip code(s): 78879

Rio Dell, CA (city, FIPS 60900) Location: 40.50082 N, 124.10633 W
Population (1990): 3012 (1244 housing units)
Area: 4.8 sq km (land), 0.2 sq km (water)
Zip code(s): 95562

Rio Bravo, TX Zip code(s): 78043

Rio Vista, TX (city, FIPS 62240) Location: 32.23569 N, 97.37546 W
Population (1990): 541 (201 housing units)
Area: 2.1 sq km (land), 0.0 sq km (water)
Zip code(s): 76093

Rio Communities, NM (CDP, FIPS 63145) Location: 34.64407 N, 106.71804 W
Population (1990): 3233 (1447 housing units)
Area: 15.6 sq km (land), 0.0 sq km (water)

Rio Grande, OH (village, FIPS 67258) Location: 38.88166 N, 82.37862 W
Population (1990): 995 (301 housing units)
Area: 2.4 sq km (land), 0.0 sq km (water)

Rio Grande City, TX (CDP, FIPS 62168) Location: 26.37845 N, 98.82625 W
Population (1990): 9891 (2958 housing units)
Area: 18.6 sq km (land), 0.4 sq km (water)
Zip code(s): 78582

Rio Grande County, CO (county, FIPS 105) Location: 37.60650 N, 106.38801 W
Population (1990): 10770 (5277 housing units)
Area: 2363.6 sq km (land), 1.4 sq km (water)

Rio Arriba County, NM (county, FIPS 39) Location: 36.50914 N, 106.69709 W
Population (1990): 34365 (14357 housing units)
Area: 15172.4 sq km (land), 99.6 sq km (water)

Rio Blanco County, CO (county, FIPS 103) Location: 39.97526 N, 108.19911 W
Population (1990): 5972 (2803 housing units)
Area: 8342.8 sq km (land), 5.0 sq km (water)

Rio del Mar, CA (CDP, FIPS 60928) Location: 36.95784 N, 121.88384 W
Population (1990): 8919 (4580 housing units)
Area: 7.7 sq km (land), 4.2 sq km (water)

Rio Rico East, AZ (CDP, FIPS 60184) Location: 31.47978 N, 110.97557 W
Population (1990): 1407 (512 housing units)
Area: 4.7 sq km (land), 0.0 sq km (water)

Rio, IL (village, FIPS 64148) Location: 41.10866 N, 90.39896 W
Population (1990): 260 (98 housing units)
Area: 0.8 sq km (land), 0.0 sq km (water)
Zip code(s): 61472

Rio, WI (village, FIPS 68100) Location: 43.45027 N, 89.23765 W
Population (1990): 768 (336 housing units)
Area: 2.8 sq km (land), 0.0 sq km (water)
Zip code(s): 53960

Rio, WV Zip code(s): 26755

Rio, FL (CDP, FIPS 60550) Location: 27.21546 N, 80.24271 W
Population (1990): 1054 (625 housing units)
Area: 1.0 sq km (land), 1.3 sq km (water)

Rio, VA (CDP, FIPS 67288) Location: 38.07615 N, 78.46129 W
Population (1990): 5133 (2222 housing units)
Area: 13.6 sq km (land), 0.1 sq km (water)

Del Rio, TN Zip code(s): 37727

Monte Rio, CA (CDP, FIPS 48928) Location: 38.46527 N, 123.01233 W
Population (1990): 1058 (824 housing units)
Area: 3.9 sq km (land), 0.2 sq km (water)

El Rio, CA (CDP, FIPS 22370) Location: 34.24265 N, 119.15873 W
Population (1990): 6419 (1762 housing units)
Area: 4.2 sq km (land), 0.0 sq km (water)

Del Rio, TX (city, FIPS 19792) Location: 29.37635 N, 100.89566 W
Population (1990): 30705 (10691 housing units)
Area: 38.2 sq km (land), 0.0 sq km (water)

Del Rio, FL (CDP, FIPS 17188) Location: 28.00885 N, 82.39987 W
Population (1990): 8248 (4037 housing units)
Area: 4.8 sq km (land), 0.0 sq km (water)