InfoChimps is a data marketplace where publishers and owners of datasets can charge for their usage.
The IP Census API provides two calls for users; one to obtain demographic information on site visitors based on their IP address and the other to obtain latitude/longitude coordinates or zip code. The data is independently verified to be 99% accurate at country level, and 95% accurate at the city level worldwide.
The API uses RESTful protocol and responses are formatted in JSON or JSONP.
The GetDemographics API aims to return a set of market, affordability, real estate, and demographic data for a specified region, including: Local Market Data (e.g., median list price, number of homes...