I need to find information on a city (or zip code) and changes over time. I need population, median income, and other data over the span 1991-2003 for zip code 45750.
Can anyone point me in the right direction?
Many public libraries offer searchable databases with demographic information.
The city City data offers demongraphic info and lots of statistics on not only cities, but small towns. All the ones I’ve lived in are listed on their site:
It isn’t quite over the date range you specified, though the information is based on the 2000 census, but for quick, summarized information on things like that, I like:
Wolfram Alpha.
Here’s the data for zip code 45750, Marietta Ohio:
You might also try your local Chamber of Commerce.