Below are a list of the cities located in Washington County, OH. There are 20 total unique zip codes in Washington County, Ohio. The time zone for Washington County is the Time zone and they follow daylight savings time. The Federal Information Processing System (FIPS) Code for echo $county.' County, '.$state_abbrev ?> is 39167.
The population in Washington County, OH is currently 59,423. That is a decrease of -3.28% vs the population of 61,778 in 2010.
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