About three dozen properties are on all three.
The vast majority of sites are along just four streets, including 72 sites on East First Avenue, another 70 on East Avenue A, some 51 on Main Street, and 48 on Sherman Street.
The Houston Whiteside District contains 40 structures designated historic and 150 “contributing structures.”
The boundaries of that district, generally, are from Plum to Pershing streets and between the railroad tracks north of First Avenue to the alley south of Avenue E.
There are also two Historic Districts downtown, each starting a half block north and south of Sherman Street, respectively, and encompassing a half dozen blocks between Poplar and Washington streets.