Hi @mische7
If you’re comfortable with doing some fancy javascript, you could listen to the change even on the state <select> and use it to filter out the options and then display the County <select>.
Does that make sense?
If you need more control, I would suggest creating your own form, and use wp_insert_post() and ACF’s update_field() to submit your data. It’s not very hard and I can walk you through that if you need.
Phil
