Below is a list of Lamar MO zip codes. For your research we have also included Lamar Area Code, Time Zone, UTC and the local Barton County FIPS Code. Each Lamar Missouri zip code has a center Longitude / Latitude point (the Lamar center is -94.27269744873 / 37.493099212646). For your convenience we have also indicated if that zip code in Lamar observes Daylight Savings time.