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Musings of a web developer, data journalist, historian, and cat herder from Baltimore.

Find latitude and longitude of any known location by clicking it on a map or entering zip codes or addresses. Batch geocode a list of locations. Convert decimal degrees to degrees minutes seconds and vice versa.

Make maps from a list of multiple addresses, create a mobile optimized map or locator. Free hosting for your custom interactive map or locator.

Free online searches and ZIP code database downloads, with zip codes and latitude and longitude for performing distance calculations. Includes full documentation.

New district matching, data, API and batch address processing and mapping for 113th congressional and new State legislative districts

ArcGIS forums

SmartyStreets is the leading mailing list software and address hygiene services provider. We provide on-demand USPS CASS Scrubbing and postal address verification, validation, certification, and standardization services that are CASS-Certified(TM) by...

ZIP Code Database list & Demographics - ZIP Codes by City with Boundary Data - Free ZIP Code Finder - or Download the Data - Maps, Zip Codes, Area Codes, Household Income, Current Population, Multi County Data, Postal codes, MSA codes, CBSA codes...

Microsoft Excel Consulting, Online Classes, video tutorials, free macros, and walkthroughs for beginners and advanced levels. Also includes helpful tips, tricks, code, and a forum.