Mobile, AL

ZIP code 36603 is assigned to Mobile, AL, and falls within Mobile County. Like every US postal code, it began as a mail-routing device rather than a geographic boundary — the US Postal Service groups delivery routes under a single code so carriers and sorting equipment can process mail efficiently. Today it also serves as a practical shorthand for the area itself: roughly 7,805 people live inside it.

At 2,045 residents per square mile spread over 3.816 square miles, 36603 reads as a suburban area. It is a smaller postal code by population, and density shapes almost everything else on this page — how people get to work, whether they own or rent, and what housing costs.

Household earnings are well below the national median. At $27,083, 36603 ranks among the lower-income postal codes, ahead of 1% of them. The US median for comparison is $70,109. Bear in mind that median income describes the midpoint household, not the average — it is not pulled upward by a handful of very high earners the way a mean would be.

Housing in 36603 costs below the national median. A typical home is valued at $107,400 against a US median of $207,500, and median gross rent runs $704 a month. This is firmly renter territory — 67.2% of occupied homes are rented, a pattern typical of city centres, student areas and neighbourhoods with a lot of apartment stock.

The building stock is dominated by detached single-family houses, which account for 62.9% of housing units here. The median construction year is 1965, making the housing here mid-century. The vacancy rate of 22.6% is high, which in many places reflects seasonal or second-home use rather than abandonment.

The population skews broadly in line with the national age profile, with a median age of 39.8 against 42 nationally. The average household holds 2.6 people, and 44.8% are family households.

Getting to work takes 22.0 minutes on average one way. The dominant mode is drove alone at 71.9% of workers.

Beyond addressing mail, 36603 does a lot of quiet administrative work. Retailers use it to calculate shipping and sales tax at checkout. Insurers use it to set premiums, since risk profiles vary geographically. Employers and marketers use it to define service areas. Government agencies use it to route benefits and organise reporting. If you have ever been asked for a postal code by a form that clearly does not intend to send you anything, this is why.

For anyone weighing a move, 36603 offers a compact profile of Mobile: 7,805 residents, a median household income of $27,083, 11.7% of adults holding a bachelor's degree or higher, and an unemployment rate of 6.4%. A handful of figures like these answer more relocation questions than most neighbourhood guides do.

One caution worth repeating: a postal code is not a neighbourhood. 36603 may cover parts of several distinct areas, and a single neighbourhood in Mobile may be split across more than one code. Boundaries also shift as USPS adjusts delivery routes. Treat the figures here as describing a delivery area, which is what they actually measure.