There are 162 Pet Health Services in St. Charles County, Missouri, serving a population of 385,115 people in an area of 561 square miles. There is 1 Pet Health Service per 2,377 people, and 1 Pet Health Service per 3 square miles.
In Missouri, St. Charles County is ranked 73rd of 115 counties in Pet Health Services per capita, and 4th of 115 counties in Pet Health Services per square mile.