St. Clair County ZIP Codes

List of ZIP Codes in St. Clair County

The following table lists ZIP Codes associated with St. Clair County, Michigan, based on ZIP Code Tabulation Area (ZCTA) data from the U.S. Census Bureau.

S.N.	Zip Code	Latitude	Longitude	City	Population	Density
1	48001	42.63732	-82.57949	Algonac	11,502	233.4
2	48002	42.93916	-82.92601	Allenton	3,129	32.5
3	48006	43.0754	-82.69642	Avoca	3,891	21.0
4	48014	43.02466	-82.93115	Capac	4,319	45.4
5	48022	43.02824	-82.81111	Emmett	2,517	27.5
6	48023	42.70102	-82.6593	Fair Haven	4,980	112.8
7	48027	42.94466	-82.68217	Goodells	3,182	32.9
8	48028	42.58947	-82.61948	Harsens Island	1,058	23.0
9	48032	43.13278	-82.59457	Jeddo	1,834	19.2
10	48039	42.69664	-82.55052	Marine City	7,466	125.3
11	48040	42.90983	-82.48022	Marysville	9,942	555.4
12	48041	42.93861	-82.80271	Memphis	4,385	42.3
13	48049	43.0361	-82.57504	North Street	5,485	59.4
14	48054	42.77054	-82.54515	East China	7,200	68.4
15	48059	43.08253	-82.49913	Fort Gratiot	15,371	187.3
16	48060	42.97835	-82.46297	Port Huron	39,502	735.3
17	48063	42.85581	-82.67676	Columbus	4,106	43.1
18	48064	42.76719	-82.67233	Casco	3,996	41.7
19	48074	42.9484	-82.56196	Smiths Creek	9,617	99.8
20	48079	42.8576	-82.54721	Saint Clair	12,683	117.0
21	48097	43.12639	-82.82955	Yale	5,400	27.4

About St. Clair County ZIP Codes

St. Clair County in Michigan (MI) is served by approximately 21 ZIP Codes. These codes cover residential neighborhoods, business districts, and rural areas that fall under the county's jurisdiction.

Based on ZIP-level population estimates, the total population covered by these ZIP Codes is around 161,565 people. Population and density values vary from one ZIP Code to another, reflecting the mix of dense urban communities and lower-density suburban or rural zones.

Many of the most significant population centers in St. Clair County are located in cities such as Port Huron, Fort Gratiot, Saint Clair, Algonac, Marysville. These cities and towns help define the economic and demographic character of the county.

Most ZIP Codes in St. Clair County, Michigan follow the America/Detroit time zone.

St. Clair County ZIP Codes

List of ZIP Codes in St. Clair County

About St. Clair County ZIP Codes

Michigan Counties ZIP Codes

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