Zip Code (Post Office)	Population 2000	Population Est. 2004	Pop. Projections 2009	Pop. Proj. 2004-9 - % Change
	63301  Saint Charles	46,059	46,356	52,300	12.82
	63303  Saint Charles	41,575	45,934	50,549	10.05
	63304  Saint Charles	38,586	43,604	49,582	13.71
	63332  Augusta	1,207	935	1072	14.65
	63341  Defiance	3,143	4,101	4,517	10.14
	63348  Foristell	4,526	4,647	5,294	13.92
	63366  O' Fallon	57,473	69,108	78,498	13.59
	63367  Lake Saint Louis	8,350	11,661	12,614	8.17
	63373  Portage Des Sioux	680	468	540	15.38
	63376  Saint Peters	68,741	72,061	80,239	11.35
	63385  Wentzville	13,825	17,257	19,894	15.28
	63386  West Alton	557	551	652	18.32
	Sources: Census 2000
	GeoLytics: CensusCD, Est. 2004, Projctions (2009)