Origin ZIP Code is 74075. The first 3-digits of your ZIP Code determine your postal zone.

ZIP Code Prefix	Zone	ZIP Code Prefix	Zone	ZIP Code Prefix	Zone	ZIP Code Prefix	Zone
005	6	403..418	5	668..669	3	834	5
006..009	8	420..427	4	670..673	2	835..838	6
010..039	6	430..459	5	674..676	3	840..847	5
040..049	7	460..464	4	677	4	850	5
050..098	6	465..468	5	678..679	3	852..853	5
100..139	6	469	4	680..681	4	855..857	5
140..143	5	470	5	683..685	3	859..860	5
144..146	6	471..472	4	686..693	4	863	5
147	5	473	5	700..701	4	864	6
148..149	6	474..479	4	703..708	4	865	5
150..168	5	480..499	5	710..712	3	870..875	5
169..212	6	500..516	4	713..714	4	877	4
214	6	520..528	4	716..725	3	878..880	5
215	5	530..532	5	726..729	2	881..884	4
216..225	6	534	5	730..731	2*	885	5
226..229	5	535	4	733	4	889..891	6
230..238	6	537..540	4	734	2*	893..895	6
239..268	5	541..545	5	735..736	3*	897..898	6
270..306	5	546	4	737	2*	900..908	6
307	4	547..549	5	738	3*	910..928	6
308..329	5	550..555	4	739	3	930..938	6
330..334	6	556..558	5	740..741	1*	939..941	7
335..338	5	559..561	4	743..744	1*	942	6
339..341	6	562..567	5	745..746	2*	943..951	7
342	5	570..573	4	747	3	952..953	6
344	5	574	5	748..749	2*	954..955	7
346..347	5	575	4	750..758	3	956..958	6
349	6	576..577	5	759	4	959..960	7
350..352	4	580..588	5	760..764	3	961	6
354..362	4	590..593	5	765..784	4	962..966	7
363	5	594..599	6	785	5	967..969	8
364..374	4	600..620	4	786..791	4	970..977	7
375	3	622..639	4	792	3	978..979	6
376..379	5	640..642	3	793..797	4	980..986	7
380..381	3	644..647	3	798..799	5	988..989	7
382..385	4	648	2	800..812	4	990..994	6
386	3	649..653	3	813..816	5	995..999	8
387..397	4	654..658	2	820	4
398..399	5	660..666	3	821..832	5
400..402	4	667	2	833	6