What city is ZIP code 51231?

51231 is a Archer, Iowa ZIP code.

What county is 51231 in?

ZIP code 51231 is in O'Brien County, Iowa.

What time zone is ZIP code 51231 in?

51231 is in the Central Time zone (America/Chicago).

What area code is 51231?

Phone numbers in ZIP code 51231 use area code 712.

What is the population of ZIP code 51231?

About 562 people live in ZIP code 51231, according to the Census Bureau’s American Community Survey (2020–2024).

What is the median income in 51231?

The median household income in 51231 is $108,058 a year, higher than 93% of Iowa ZIP codes.

What ZIP codes are near 51231?

The nearest ZIP codes to 51231 are 51245 (Primghar, 5.3 miles), 51248 (Sanborn, 6.3 miles), 51201 (Sheldon, 6.6 miles) and 51238 (Hospers, 9.1 miles).

ZIP code 51231

Where is ZIP code 51231?

Archer, Iowa

O'Brien County · Standard ZIP code

ZIP code 51231 belongs to Archer, Iowa in O'Brien County. 51231 is a standard ZIP code, so it covers street addresses as well as PO Boxes. It is in the Central Time zone and uses area code 712. About 562 people live in the 51231 area, where the median household income is $108,058. The closest ZIP codes are 51245 (Primghar, 5.3 mi southeast), 51248 (Sanborn, 6.3 mi northeast) and 51201 (Sheldon, 6.6 mi northwest).

ZIP code	51231
Type	Standard ZIP code for street addresses and PO Boxes
Status	Active
City	Archer
State	Iowa (IA)
County	O'Brien County
Time zone	Central Time · now
Area code	712
Coordinates	43.1179, -95.7417 map
3-digit prefix	512

Population and income in 51231

Population	562 · lower than 66% of Iowa ZIP codes
People per square mile	23 · higher than 53% of Iowa ZIP codes
Median age	15.1 years · lower than 100% of Iowa ZIP codes
Men / women	60% / 40%
Median household income	$108,058 · higher than 93% of Iowa ZIP codes
Income per person	$22,575
Below the poverty line	30%
Bachelor’s degree or higher	34% of adults 25+
Median home value	$189,500 · higher than 66% of Iowa ZIP codes
Housing units	143
Households	141 (3.99 people on average)
Owners / renters	94% / 5.7%
Land area	24.21 sq mi

Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 51231. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.

ZIP codes near 51231

ZIP code	City	Distance	Type
51245	Primghar, IA	5.3 mi SE	Standard
51248	Sanborn, IA	6.3 mi NE	Standard
51201	Sheldon, IA	6.6 mi NW	Standard
51238	Hospers, IA	9.1 mi W	Standard
51046	Paullina, IA	10.3 mi S	Standard
51022	Granville, IA	12.9 mi SW	Standard
51232	Ashton, IA	13 mi N	Standard
51244	Matlock, IA	13.1 mi NW	Standard
51234	Boyden, IA	13.5 mi NW	Standard
51350	Melvin, IA	13.7 mi NE	Standard
51346	Hartley, IA	13.8 mi E	Standard
51009	Calumet, IA	15.4 mi SE	PO Box only

Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 51231 or measure the distance to another ZIP code.

How to address mail to 51231

JANE SMITH
123 MAIN ST
ARCHER IA 51231

Put the city, the two-letter state code and the ZIP code on the last line. Adding the 4-digit ZIP+4 code (51231-XXXX) helps mail sort faster but isn’t required.

Questions

What city is ZIP code 51231?: 51231 is a Archer, Iowa ZIP code.
What county is 51231 in?: ZIP code 51231 is in O'Brien County, Iowa.
What time zone is ZIP code 51231 in?: 51231 is in the Central Time zone (America/Chicago).
What area code is 51231?: Phone numbers in ZIP code 51231 use area code 712.
What is the population of ZIP code 51231?: About 562 people live in ZIP code 51231, according to the Census Bureau’s American Community Survey (2020–2024).
What is the median income in 51231?: The median household income in 51231 is $108,058 a year, higher than 93% of Iowa ZIP codes.
What ZIP codes are near 51231?: The nearest ZIP codes to 51231 are 51245 (Primghar, 5.3 miles), 51248 (Sanborn, 6.3 miles), 51201 (Sheldon, 6.6 miles) and 51238 (Hospers, 9.1 miles).