CREATE TEMPORARY TABLE `ZipTemp` ( `ZipCode` CHAR(6) DEFAULT NULL, PRIMARY KEY (`ZipCode`) ) ENGINE=MYISAM DEFAULT CHARSET=utf8; INSERT INTO ZipTemp (ZipCode) SELECT DISTINCT ZipCode FROM AreaTownZip a WHERE a.ZipLat BETWEEN 47.1805648804 AND 49.1805648804 AND a.ZipLong BETWEEN -122.951263428 AND -120.951263428; in Arlington, WA