I have discovered 5 zip codes for which the city names
are incorrect (though I imagine there are more).
94401 should be San Mateo, not Russian River
95462 should be Monte Rio, not Russian River Md
43160 should be Washington Court House, not Washington
84762 should be Duck Creek Village, not Duck Creek
26351 should be Glenville, not Baldwin (USPS says
Baldwin is acceptable, as is Gilmer, but Glenville is
the actual name)
I'm attaching a patch to fix the zip_codes.sql file.