September, 2026 Facts & Stats

U.S. Counts	Number	Percent
Total U.S. ZIP Codes	41,540	100%
General ZIP Codes	29,808	71.8%
PO Box ZIP Codes	9,121	22.0%
Military ZIP Codes	588	1.4%
Unique/Business ZIP Codes	2,023	4.9%
Total Multi County ZIP Codes	9,699	23.3%
Total General ZIP Codes Observing DST	29,313	98.3%
Total General ZIP Codes NOT Observing DST	495	1.7%
Total Unique City Names	29,614	100%
Total Unique City Alias Names	60,067	100%
Avg Population (Census 2020) Per ZIP Code	8,057	100%
Avg Population Estimate (Sep, 2026) Per ZIP Code	8,567	100%
Avg Number of Changes to ZIP Codes Per Month	392.3	0.9%
Avg Number of Changes to ZIP Codes Per Year	4,707.6	11.3%
Canadian Counts	Number	Percent
Total Canadian Postal Codes	883,729	100%
Total Canadian FSA's	1,668	100%
Total Unique City Names	7,598	100%

September, 2026 ZIP Code Counts by U.S. State

Delivery counts are USPS delivery points — the addresses a carrier actually serves — not households or businesses from the Census.

U.S. State/Territory	Total ZIP Codes	Percent	Residential Delivery	Business Delivery
Armed Forces Americas	59	0.1%	0	0
Armed Forces	360	0.9%	0	0
Alaska	273	0.7%	211,720	16,266
Alabama	799	1.9%	2,281,737	139,613
Armed Forces Pacific	169	0.4%	0	0
Arkansas	708	1.7%	1,343,914	84,299
American Samoa	1	0.0%	0	0
Arizona	519	1.2%	3,063,171	150,680
California	2,571	6.2%	14,223,020	1,089,702
Colorado	647	1.6%	2,481,709	149,344
Connecticut	420	1.0%	1,501,786	103,051
District of Columbia	301	0.7%	368,175	20,773
Delaware	96	0.2%	457,872	24,423
Florida	1,457	3.5%	10,258,106	615,008
Federated States of Micronesia	4	0.0%	0	0
Georgia	943	2.3%	4,566,231	282,977
Guam	12	0.0%	19,481	2,521
Hawaii	137	0.3%	472,801	32,457
Iowa	1,056	2.5%	1,334,384	76,171
Idaho	320	0.8%	770,279	47,268
Illinois	1,569	3.8%	5,088,696	322,511
Indiana	958	2.3%	2,894,440	161,045
Kansas	755	1.8%	1,215,226	76,653
Kentucky	944	2.3%	1,957,183	107,929
Louisiana	719	1.7%	2,025,541	140,741
Massachusetts	679	1.6%	2,853,048	195,377
Maryland	602	1.4%	2,507,606	141,055
Maine	484	1.2%	611,636	34,763
Marshall Islands	3	0.0%	0	0
Michigan	1,160	2.8%	4,303,324	245,867
Minnesota	957	2.3%	2,457,079	126,422
Missouri	1,156	2.8%	2,702,957	161,803
Northern Mariana Islands	3	0.0%	0	0
Mississippi	516	1.2%	1,275,867	81,078
Montana	408	1.0%	436,468	31,397
North Carolina	1,080	2.6%	4,929,089	268,687
North Dakota	424	1.0%	327,470	20,883
Nebraska	624	1.5%	815,249	50,360
New Hampshire	281	0.7%	576,731	37,907
New Jersey	721	1.7%	3,640,863	247,915
New Mexico	430	1.0%	791,083	51,338
Nevada	243	0.6%	1,304,587	73,419
New York	2,143	5.2%	7,671,400	497,474
Ohio	1,413	3.4%	5,100,186	288,788
Oklahoma	765	1.8%	1,684,847	115,885
Oregon	480	1.2%	1,767,901	104,476
Pennsylvania	2,161	5.2%	5,442,796	326,496
Puerto Rico	174	0.4%	1,029,530	58,629
Palau	2	0.0%	0	0
Rhode Island	90	0.2%	454,583	32,659
South Carolina	534	1.3%	2,507,224	138,741
South Dakota	413	1.0%	367,629	24,263
Tennessee	789	1.9%	3,195,179	188,849
Texas	2,598	6.3%	12,580,330	813,353
Utah	346	0.8%	1,215,474	74,067
Virginia	1,213	2.9%	3,665,806	205,128
Virgin Islands	16	0.0%	15,807	3,067
Vermont	308	0.7%	264,956	16,129
Washington	716	1.7%	3,212,122	165,865
Wisconsin	877	2.1%	2,620,816	140,444
West Virginia	852	2.1%	740,887	39,981
Wyoming	197	0.5%	215,321	15,859

The column above sums to 41,655 against 41,540 ZIP Codes nationally. The difference is the ZIP Codes that cross a state line — each is listed under every state its delivery area reaches.

Postal Code Counts by Canadian Province

Canadian Province	Total Postal Codes	Percent	Unique FSAs
Alberta	90,940	10.3%	156
British Columbia	120,264	13.6%	193
Manitoba	26,807	3.0%	76
New Brunswick	59,241	6.7%	111
Newfoundland and Labrador	11,798	1.3%	35
Nova Scotia	29,193	3.3%	77
Northwest Territories	548	0.1%	3
Nunavut	53	0.0%	3
Ontario	293,281	33.2%	530
Prince Edward Island	4,187	0.5%	7
Quebec	222,846	25.2%	422
Saskatchewan	23,537	2.7%	53
Yukon	1,035	0.1%	3

The FSA column sums to 1,669 against 1,668 nationally, because one forward sortation area spans a provincial boundary and is counted under both provinces.

The Shape of the ZIP Code File

Four things the raw counts above do not show. Every figure here is measured from the same file, at the same moment, as everything else on this page.

Where the digits land

The first digit splits the country into ten bands running roughly north-east to west, so every ZIP Code beginning 0 falls in the same band whatever its remaining four digits. They are nowhere near equal — see the prefix maps for what each one covers.

Prefix ZIP Codes Share
0XXXX 3,535 8.5%
1XXXX 4,397 10.6%
2XXXX 4,548 10.9%
3XXXX 4,557 11.0%
4XXXX 4,474 10.8%
5XXXX 4,109 9.9%
6XXXX 4,084 9.8%
7XXXX 4,710 11.3%
8XXXX 2,760 6.6%
9XXXX 4,366 10.5%

Share is of all 41,540 U.S. ZIP Codes. Unlike the state table further down, this one reconciles exactly — every ZIP Code has exactly one first digit.

A ZIP Code is a delivery route, not an area

453 general ZIP Codes with no residential delivery

139,821,323 residential delivery points

8,661,856 business delivery points

This is why a ZIP Code and a Census ZCTA are not the same thing. A ZIP Code with no residential deliveries has no residents to count, so the Census has nothing to build a ZCTA from — and the ZIP simply will not appear in a Census-derived file.

Ours is not Census-derived. The U.S. ZIP Code Database is built from USPS delivery data, so all 41,540 ZIP Codes are in it — including the 453 above that a ZCTA-based list has no way to represent.

See the ZIP Code Database

ZIP Codes that cross a state line

112 ZIP Codes whose delivery area reaches into another state

Mail routes follow roads, not borders. Where an address is easier to serve from a post office on the other side of a state line, the ZIP Code goes with it — so the ZIP is filed under its home state while part of its delivery area sits in another. 51640 is a Hamburg, Iowa ZIP Code that also delivers into Missouri and Nebraska.

ZIP Code	City	Home state	Also reaches into
51640	Hamburg	IA	MO, NE
57717	Belle Fourche	SD	MT, WY
82082	Pine Bluffs	WY	CO, NE
03579	Errol	NH	ME
19973	Seaford	DE	MD
20135	Bluemont	VA	WV
30555	Mc Caysville	GA	TN
30559	Mineral Bluff	GA	NC
35958	Bryant	AL	GA
36855	Five Points	AL	GA
42602	Albany	KY	TN
51001	Akron	IA	SD
51023	Hawarden	IA	SD
51557	Mondamin	IA	NE
54540	Land O Lakes	WI	MI
56136	Hendricks	MN	SD
56144	Jasper	MN	SD
56164	Pipestone	MN	SD
56219	Browns Valley	MN	SD
56220	Canby	MN	SD

The most recently introduced ZIP Codes

The USPS adds and retires ZIP Codes every month. These are the newest general-delivery ZIP Codes in the current file.

ZIP Code	City	State	Introduced
77352	Livingston	TX	2026-06
84048	Lehi	UT	2025-06
85144	San Tan Valley	AZ	2023-06
85288	Tempe	AZ	2021-06
72405	Jonesboro	AR	2019-06

Top 10 Lists of US ZIP Codes

* All data here can be calculated by you from our U.S. ZIP Code Database.

Top 10 ZIP Codes by 2020 Census Population

#	ZIP Code	City	Number
1	08701	Lakewood, NJ	135,256
2	77494	Katy, TX	130,872
3	77449	Katy, TX	128,180
4	11368	Corona, NY	117,110
5	60629	Chicago, IL	114,453
6	78660	Pflugerville, TX	110,955
7	77084	Houston, TX	109,808
8	77433	Cypress, TX	106,663
9	11220	Brooklyn, NY	105,797
10	11373	Elmhurst, NY	105,712

Top 10 ZIP Codes by Sep, 2026 Population Estimate

#	ZIP Code	City	Number
1	77433	Cypress, TX	166,400
2	77494	Katy, TX	164,049
3	77449	Katy, TX	156,255
4	78660	Pflugerville, TX	149,690
5	78641	Leander, TX	141,740
6	34787	Winter Garden, FL	133,711
7	08701	Lakewood, NJ	132,718
8	78245	San Antonio, TX	132,275
9	78130	New Braunfels, TX	127,947
10	77084	Houston, TX	127,377

Top 10 ZIP Codes by Average Persons Per Household

#	ZIP Code	City	Number
1	19345	Immaculata, PA	79
2	76798	Waco, TX	58
3	98447	Tacoma, WA	58
4	93740	Fresno, CA	53
5	28308	Pope Army Airfield, NC	48
6	28533	Cherry Point, NC	43
7	83460	Rexburg, ID	43
8	32228	Jacksonville, FL	35
9	56321	Collegeville, MN	32
10	27593	Wilsons Mills, NC	31

Top 20 ZIP Codes by Income Per Household

#	ZIP Code	City	Number
1	99546	Adak, AK	$250,001
2	94507	Alamo, CA	$250,001
3	67513	Alexander, KS	$250,001
4	10502	Ardsley, NY	$250,001
5	10504	Armonk, NY	$250,001
6	94027	Atherton, CA	$250,001
7	24412	Bacova, VA	$250,001
8	20838	Barnesville, MD	$250,001
9	10506	Bedford, NY	$250,001
10	07926	Brookside, NJ	$250,001
11	18912	Buckingham, PA	$250,001
12	58323	Calvin, ND	$250,001
13	01741	Carlisle, MA	$250,001
14	15421	Chalk Hill, PA	$250,001
15	10514	Chappaqua, NY	$250,001
16	22904	Charlottesville, VA	$250,001
17	81128	Chromo, CO	$250,001
18	81220	Cimarron, CO	$250,001
19	11724	Cold Spring Harbor, NY	$250,001
20	06022	Collinsville, CT	$250,001

Top 10 ZIP Codes by Male Population

#	ZIP Code	City	Number
1	08701	Lakewood, NJ	67,766
2	77494	Katy, TX	64,182
3	77449	Katy, TX	62,049
4	11368	Corona, NY	61,079
5	60629	Chicago, IL	56,835
6	78660	Pflugerville, TX	54,595
7	77084	Houston, TX	53,401
8	11220	Brooklyn, NY	53,003
9	11373	Elmhurst, NY	52,702
10	77433	Cypress, TX	52,263

Top 10 ZIP Codes by Female Population

#	ZIP Code	City	Number
1	08701	Lakewood, NJ	67,490
2	77494	Katy, TX	66,690
3	77449	Katy, TX	66,131
4	60629	Chicago, IL	57,618
5	77084	Houston, TX	56,407
6	78660	Pflugerville, TX	56,360
7	11368	Corona, NY	56,031
8	11226	Brooklyn, NY	55,932
9	11236	Brooklyn, NY	55,770
10	10467	Bronx, NY	55,104

Top 10 Oldest ZIP Codes by Median Age

#	ZIP Code	City	Number
1	40049	Nerinx, KY	87
2	46624	South Bend, IN	87
3	14302	Niagara Falls, NY	87
4	20422	Washington, DC	86
5	32079	Penney Farms, FL	85
6	40061	Saint Catharine, KY	85
7	17606	Lancaster, PA	85
8	35052	Cook Springs, AL	84
9	40041	Masonic Home, KY	84
10	11005	Floral Park, NY	83

Top 10 Oldest ZIP Codes by Male Median Age

#	ZIP Code	City	Number
1	46624	South Bend, IN	87
2	14302	Niagara Falls, NY	87
3	20422	Washington, DC	86
4	32079	Penney Farms, FL	85
5	17606	Lancaster, PA	84
6	18413	Clifford, PA	83
7	19736	Yorklyn, DE	82
8	40041	Masonic Home, KY	82
9	19436	Gwynedd, PA	82
10	85902	Show Low, AZ	82

Top 10 Oldest ZIP Codes by Female Median Age

#	ZIP Code	City	Number
1	40049	Nerinx, KY	88
2	54946	King, WI	87
3	46624	South Bend, IN	87
4	14302	Niagara Falls, NY	87
5	07939	Lyons, NJ	86
6	32079	Penney Farms, FL	86
7	66622	Topeka, KS	86
8	40061	Saint Catharine, KY	85
9	29177	White Rock, SC	85
10	17606	Lancaster, PA	85

Top 10 Youngest ZIP Codes by Median Age

#	ZIP Code	City	Number
1	11451	Jamaica, NY	1
2	32203	Jacksonville, FL	1
3	35185	Westover, AL	2
4	76902	San Angelo, TX	2
5	10111	New York, NY	2
6	39324	Clara, MS	3
7	05746	Gaysville, VT	5
8	20892	Bethesda, MD	6
9	78585	Salineno, TX	9
10	96850	Honolulu, HI	9

Top 10 Youngest ZIP Codes by Male Median Age

#	ZIP Code	City	Number
1	32203	Jacksonville, FL	1
2	11451	Jamaica, NY	1
3	80646	Lucerne, CO	1
4	10111	New York, NY	2
5	10112	New York, NY	2
6	35185	Westover, AL	2
7	38733	Cleveland, MS	2
8	76902	San Angelo, TX	2
9	78540	Edinburg, TX	3
10	40221	Louisville, KY	3

Top 10 Youngest ZIP Codes by Female Median Age

#	ZIP Code	City	Number
1	39324	Clara, MS	3
2	78585	Salineno, TX	5
3	05746	Gaysville, VT	5
4	77468	Pledger, TX	6
5	97709	Bend, OR	6
6	36753	Mc Williams, AL	6
7	43530	Jewell, OH	6
8	96850	Honolulu, HI	6
9	20892	Bethesda, MD	6
10	75680	Minden, TX	7

#	FSA	State	Number
1	J0K	QC	149,238
2	K0K	ON	115,850
3	K0A	ON	111,626
4	L9T	ON	110,956
5	L5M	ON	106,468
6	V3S	BC	104,997
7	L7A	ON	104,009
8	L4N	ON	100,835
9	L6Y	ON	97,601
10	V3W	BC	95,970

#	FSA	State	Number
1	J0K	QC	78,999
2	K0K	ON	53,153
3	K0L	ON	48,786
4	K0A	ON	43,737
5	G0R	QC	43,153
6	M5V	ON	42,449
7	G0A	QC	42,396
8	J0T	QC	42,290
9	V0N	BC	39,578
10	V0E	BC	39,107

#	FSA	State	Number
1	T0K 2M0	AB	2,205.00
2	V0B 1G9	BC	2,199.00
3	V0B 2K0	BC	2,177.00
4	V0A 1E0	BC	2,092.00
5	V0K 2L0	BC	2,052.00
6	T0L 2H0	AB	1,905.00
7	T0L 1E0	AB	1,758.00
8	Y0B 1Y2	YT	1,620.00
9	Y0B 1Y1	YT	1,620.00
10	V0N 3C0	BC	1,585.00

ZIP Code Facts & Stats

September, 2026 Facts & Stats

September, 2026 ZIP Code Counts by U.S. State

Postal Code Counts by Canadian Province