3-digit ZIP Code prefix is 144. The first 3-digits of your destination ZIP Code determine the zone.
(* - Indicates zones eligible for Parcel Post Intra-BMC Rates)

ZIP Code Prefix	Zone	ZIP Code Prefix	Zone	ZIP Code Prefix	Zone	ZIP Code Prefix	Zone
005	3	262..265	3	540	5	786..787	6
006..009	8	266	4	541..545	4	788	7
010..017	3	267..268	3	546..548	5	789..792	6
018..034	4	270..289	4	549	4	793..794	7
035..037	3	290..296	5	550..567	5	795..796	6
038..049	4	297	4	570..573	5	797..799	7
050..054	3	298..324	5	574..577	6	800..804	6
055	4	325	6	580..582	5	805	7
056..098	3	326..329	5	583..588	6	806..807	6
100..129	3	330..342	6	590..591	7	808..816	7
130..136	2*	344	5	592..593	6	820	6
137..139	2	346	6	594..599	7	821	7
140..146	1*	347	5	600..611	4	822	6
147..149	2*	349	6	612	5	823..826	7
150..157	3	350..352	5	613	4	827	6
158	2	354..364	5	614..616	5	828..832	7
159..162	3	365..366	6	617..619	4	833	8
163..165	2	367..375	5	620	5	834	7
166	3	376..379	4	622..642	5	835..838	8
167	2	380..393	5	644..658	5	840..847	7
168	3	394..396	6	660..668	5	850	8
169	2	397..399	5	669..679	6	852..853	8
170..176	3	400..418	4	680..681	5	855..857	8
177	2	420..424	5	683..687	5	859..860	8
178..181	3	425..427	4	688..693	6	863..864	8
182	2	430..438	4	700..701	6	865	7
183	3	439..449	3	703..708	6	870..875	7
184..188	2	450..475	4	710..714	6	877..885	7
189..212	3	476..477	5	716	5	889..891	8
214..223	3	478..479	4	717..718	6	893..895	8
224..225	4	480..487	3	719..728	5	897..898	8
226	3	488..499	4	729..731	6	900..908	8
227..253	4	500..516	5	733..741	6	910..928	8
254	3	520..528	5	743..768	6	930..986	8
255..259	4	530..532	4	769	7	988..999	8
260	3	534..535	4	770..778	6
261	4	537..539	4	779..785	7