Indoor radon measurement has been carrying out in seventy residential dwellings at ten hamlets of Botteng Utara village. Measurements were done by a passive detector CR-39 that was installed inside the residence house for approximately two months, besides that, for better evaluation, the outdoor and indoor gamma dose rate was also measured. After exposure, all the CR-39 detectors were taken from the installation site, then etched using 6,25 N NaOH solution at 70 OC in an oven for 7 hours to develop the alpha-track and make it visible for counting. The tracks of radon read by using a microscope at 400x magnifications. The evaluation results showed that the indoor radon concentration in Botteng Utara varies between 169.06±11.92 Bq/m3 to 901.63±63.57 Bq/m3 with arithmetic and the geometric mean value of 439.06 Bq/m3 and 391.03 Bq/m3. All the indoor radon concentrations surveyed were above the reference levels of 100 Bq/m3 recommended by the World Health Organization, and 61.43% of residences exceeded the maximum permissible level of ICRP recommendation of 300 Bq/m3. The annual effective dose due to radon inhalation was estimated to be 9.47 mSv/y to 53.64 mSv/y with an average of 26.16 mSv/y, and the total annual dose from radon and gamma dose measurement in the place is between 16.42 mSv/y and 65.08 mSv/y with an average of 32.89 mSv/y. It confirms that Botteng Utara village is an area with high background radiation. [ABSTRACT FROM AUTHOR]