Confirmed Cases of COVID-19 by Zip Code Map Posted in: COVID-19News NAVASOTA, TX – Grimes County is providing enhanced information by the release of a map indicating areas of the county where individuals with confirmed cases of COVID-19 reside by zip code. COVID-19 case information for the map was provided by the Texas Department of State Health Services. Future cases reported by ...PLEASE LOG IN FOR PREMIUM CONTENT. Our website requires visitors to log in to view the best local news. Not yet a subscriber? Subscribe today!