If you ever need a map showing the counties of just one state, complete with county name labels, you can find links to those on the aptly titled County Maps of all 50 U.S. States page.
For example, clicking the Iowa County Map link on that page will take you to the County Lines on Google Maps tool already filtered to show just Iowa counties, complete with labels. It looks like this:
Once on the page, you can zoom in, turn on city limits and townships in the lower left corner, and so on.
Also, if you need to find the county you are currently in (based on your mobile device’s location), try the What County Am I In? tool. And companion tools What City Am I In? and What Township Am I In? — they do what they say on the tin. ;)
Hope these quick links make it easier to get to the state county map that you need!
I like the maps, but my question is do you have the changes made over the years. Many states have changed counties and size and renamed them. I have your app on my google browser and also have a map function on my genealogy program and it catches the changes. And yes I donate regularly.
Sure, a few ways to do that. Go to the Historical U.S. Counties on Google Maps tool ( https://www.randymajors.org/maps ). Then use the Search Places box above the map and go to place or state of interest. Then choose the “As of” year and the boundaries from then will draw. The other option is once you’re on your spot of interest check the “Show county chronology of this place” box in the lower left corner of the map. That will show every county and state that spot has been part of since county inception. Thanks for asking the question!
I forgot to include the third option for looking at a state's historical counties. This link shows you how to do it: https://www.randymajors.org/2019/08/how-to-link-to-historical-county-lines
Example link to Connecticut in 1788: https://www.randymajors.org/maps?state=CT&year=1788
Example link to Oregon in 1865 with labels: https://www.randymajors.org/maps?state=OR&year=1865&labels=show