What city is ZIP code 73556?

73556 is a Martha, Oklahoma ZIP code.

What county is 73556 in?

ZIP code 73556 is in Jackson County, Oklahoma.

What time zone is ZIP code 73556 in?

73556 is in the Central Time zone (America/Chicago).

What area code is 73556?

Phone numbers in ZIP code 73556 use area code 580.

What is the population of ZIP code 73556?

About 134 people live in ZIP code 73556, according to the Census Bureau’s American Community Survey (2020–2024).

What is the median income in 73556?

The median household income in 73556 is $64,375 a year, higher than 66% of Oklahoma ZIP codes.

Can I use 73556 for a street address?

No. 73556 is only for PO Boxes. Street addresses in Martha use another ZIP code.

What ZIP codes are near 73556?

The nearest ZIP codes to 73556 are 73526 (Blair, 4.8 miles), 73521 (Altus, 6.5 miles), 73522 (Altus, 6.7 miles) and 73523 (Altus AFB, 7.6 miles).

ZIP code 73556

Where is ZIP code 73556?

Martha, Oklahoma

Jackson County · PO Box only ZIP code

ZIP code 73556 belongs to Martha, Oklahoma in Jackson County. 73556 is a PO Box only ZIP code: it is used for post office boxes at the Martha post office, not for street addresses. It is in the Central Time zone and uses area code 580. About 134 people live in the 73556 area, where the median household income is $64,375. The closest ZIP codes are 73526 (Blair, 4.8 mi northeast), 73521 (Altus, 6.5 mi southeast) and 73522 (Altus, 6.7 mi southeast).

ZIP code	73556
Type	PO Box only (no street delivery)
Status	Active
City	Martha
State	Oklahoma (OK)
County	Jackson County
Time zone	Central Time · now
Area code	580
Coordinates	34.7253, -99.387 map
3-digit prefix	735

Population and income in 73556

Population	134 · lower than 93% of Oklahoma ZIP codes
People per square mile	532 · higher than 86% of Oklahoma ZIP codes
Median age	44.7 years · higher than 73% of Oklahoma ZIP codes
Men / women	41% / 59%
Median household income	$64,375 · higher than 66% of Oklahoma ZIP codes
Income per person	$26,315
Below the poverty line	30%
Bachelor’s degree or higher	13% of adults 25+
Median home value	$107,100 · lower than 74% of Oklahoma ZIP codes
Median rent	$625 a month
Housing units	75
Households	49 (2.73 people on average)
Owners / renters	69% / 31%
Land area	0.25 sq mi

Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 73556. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.

ZIP codes near 73556

ZIP code	City	Distance	Type
73526	Blair, OK	4.8 mi NE	Standard
73521	Altus, OK	6.5 mi SE	Standard
73522	Altus, OK	6.7 mi SE	PO Box only
73523	Altus AFB, OK	7.6 mi SE	Standard
73532	Duke, OK	10 mi SW	Standard
73560	Olustee, OK	12.4 mi S	Standard
73554	Mangum, OK	13.6 mi N	Standard
73539	Elmer, OK	15.2 mi S	Standard
73549	Headrick, OK	15.7 mi SE	Standard
73547	Granite, OK	17 mi N	Standard
73655	Lone Wolf, OK	19.3 mi NE	Standard
73570	Tipton, OK	20.8 mi SE	Standard

Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 73556 or measure the distance to another ZIP code.

How to address mail to 73556

JANE SMITH
PO BOX 123
MARTHA OK 73556

Put the city, the two-letter state code and the ZIP code on the last line. Adding the 4-digit ZIP+4 code (73556-XXXX) helps mail sort faster but isn’t required.

Questions

What city is ZIP code 73556?: 73556 is a Martha, Oklahoma ZIP code.
What county is 73556 in?: ZIP code 73556 is in Jackson County, Oklahoma.
What time zone is ZIP code 73556 in?: 73556 is in the Central Time zone (America/Chicago).
What area code is 73556?: Phone numbers in ZIP code 73556 use area code 580.
What is the population of ZIP code 73556?: About 134 people live in ZIP code 73556, according to the Census Bureau’s American Community Survey (2020–2024).
What is the median income in 73556?: The median household income in 73556 is $64,375 a year, higher than 66% of Oklahoma ZIP codes.
Can I use 73556 for a street address?: No. 73556 is only for PO Boxes. Street addresses in Martha use another ZIP code.
What ZIP codes are near 73556?: The nearest ZIP codes to 73556 are 73526 (Blair, 4.8 miles), 73521 (Altus, 6.5 miles), 73522 (Altus, 6.7 miles) and 73523 (Altus AFB, 7.6 miles).