| City: | Iowa City, Iowa |
| Names to Avoid: | American College Testing |
| County: | Johnson County |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 8:05:18 PM |
| Population: | No Population Data |
| Area Code: | 319 |
| Classification: | Unique [Company/Government] |
| Coordinates: | 41.6611, -91.5302 |
| Quick Link: |
ACT Inc., the organization behind the ACT college admissions test, operates under dedicated ZIP code 52243 in Iowa City, Johnson County, Iowa. Founded in 1959 by University of Iowa education professor E.F. Lindquist, ACT developed and administers standardized tests assessing high school students' college readiness. The company employs over 1,000 people and serves approximately 1.8 million students annually. In April 2024, ACT transitioned from a nonprofit organization to a for-profit company following acquisition by private equity firm Nexus Capital Management.
Census Bureau business data shows approximately 860 employees and 3 establishments within this postal designation, located in Iowa City's Hoover neighborhood. The P.O. Box 168 address (Iowa City, IA 52243-0168) serves as ACT's official mailing address, while their physical headquarters sits at 500 Act Drive. This postal designation has served the testing organization for over two decades. Iowa City serves as the valid mailing city.
| Establishments: | 3 |
| Employment: | 861 |
| Residential: | 0 |
| Business: | 3 |
ZIP Code 52243 supports both business and residential activity. According to the Business Census (2024), there are 4 business establishments, employing about 920 people with an annual payroll of $80,497,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 3Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 4Source: CBP |
| 1st Quarter Payroll: | $18,020,000Source: CBP |
| Annual Payroll: | $80,497,000Source: CBP |
| # of Employees: | 920Source: CBP |
ZIP Code 52243 is located in Johnson County, Iowa, within the Iowa City, IA Metropolitan Statistical Area (CBSA 26980) and Iowa's 1st Congressional District. This Metro area has a population of 177,420 people, about 0.00% of whom live in ZIP Code 52243. It covers 0 sq mi of land and a water area of 0 sq mi.
| CBSA Name: | Iowa City, IASource: Census |
| CBSA Number: | 26980Source: Census |
| CBSA Type: | MetroSource: Census |
| CBSA Division: | --Source: Census |
| CBSA Population: | 177,420Source: Census |
| MSA: | Iowa City, IA MSASource: Census |
| Land Area: | --Source: Census |
| Water Area: | --Source: Census |
| Congressional District: | 01Source: USPS |
| Congressional Land Area: | 12048.84 sq miSource: Census |
| PMSA: | --Source: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 1938595Source: Census |
| Place Name: | Iowa City city; IowaSource: Census |
We could not locate which school district 52243 belongs to, but we will update this once new district data is released. There are no public schools nor private schools with a mailing address in this ZIP Code. Listing Nearby schools instead. It also has 6 colleges, universities or post secondary education institutions nearby which would be a short commute to.
Our sources include trusted federal and licensed data from the United States Postal Service, U.S. Census Bureau, U.S. Geological Survey, Centers for Medicare & Medicaid Services, and the National Center for Education Statistics, along with proprietary datasets created by ZIP-Codes.com. Data last updated on January 1, 2026.