I checked for coronavirus updates in Arkansas County on June 19 before leaving on June 20. At that time, the last update on June 3 read that there were five confirmed cases in the county, none of which were active.
The week after I returned, Aransas County reported three more cases.
I also noted coronavirus guidelines for Goose Island State Park. The park recommends wearing a face covering and bans entering with more than 10 people, unless they are all coming from the same household, to prevent the spread of the coronavirus.