Mercer County, Ohio
Mercer County, Ohio ni boma panji nkhalwe (county pachingelezi) iyo ikusangika mu boma likulu la Ohio mu charu cha United States of America. Boma likulu la Ohio likusangika Pakati cha kumanjililo gha dazi gha chigaŵa cha United States. Pa maboma 50 gha charu cha U.S.,Ohio ni boma la nambala 34 mu ukulu wa malo ndipo lina chiŵelengelo cha ŵanthu pafupifupi 11.8 milliyoni.
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