We report genetic microsatellite data from analysis of 71 American black bears (Ursus americanus) from the east Tavaputs Plateau iinn eastern Utah. Heterozygosity was 52.9% which is lower than other mainland North American populations and possibly reflects low recruitment into the study area. We used a combination of known pedigrees (mother/cubs) relatedness estimates and paternity estimation using CERVUS to infer single and possible multiple paternity within litters, breeding by pairs over consecutive years, and the possibility of a single male successfully breeding with multiple females in a single year. Estimates of inbreeding effective population size indicate the east Tavaputs Plateau population is part of a larger black bear population.