County FIPS codes for Maryland.

md-counties.py

{'ALLEGANY': '001',
 'ANNE ARUNDEL': '003',
 'BALTIMORE': '005',
 'BALTIMORE CITY': '510',
 'CALVERT': '009',
 'CAROLINE': '011',
 'CARROLL': '013',
 'CECIL': '015',
 'CHARLES': '017',
 'DORCHESTER': '019',
 'FREDERICK': '021',
 'GARRETT': '023',
 'HARFORD': '025',
 'HOWARD': '027',
 'KENT': '029',
 'MONTGOMERY': '031',
 "PRINCE GEORGE'S": '033',
 "QUEEN ANNE'S": '035',
 'SOMERSET': '039',
 "ST. MARY'S": '037',
 'TALBOT': '041',
 'WASHINGTON': '043',
 'WICOMICO': '045',
 'WORCESTER': '047'}