I am not entirely sure what you are doing with
action="<?php echo $editFormAction; ?>"
But with the code above, when the user clicks on submit all of the variables in your form will be available to the next PHP page as $_POST['County'] etc etc
You can use this in an sql insert statement:
$sql="INSERT into MyTable (County) VALUES ('".$_POST['County']."') WHERE .........";
You can also then go on to have a form on this page along the lines of:
<input type="text" name="County" value="<?PHP echo $_POST['County']; ?>">
which will fill in this field with the variable value.
HTH - Blu