| City: | Rock Island, Illinois |
| Names to Avoid: | Rock Island Arsonal |
| County: | Rock Island County |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 11:23:26 PM |
| Population: | No Population Data |
| Area Codes: | 309 / 861 |
| Classification: | Unique [Company/Government] |
| Coordinates: | 41.5095, -90.5786 |
| Quick Link: |
Rock Island Arsenal, an active U.S. Army installation located on a 946-acre island in the Mississippi River, operates under dedicated ZIP code 61299 in Rock Island County, Illinois. This major military installation is home to more than 80 tenant organizations and employs over 6,000 military, civilian, and contractor personnel. The Arsenal serves as the only active U.S. Army foundry and manufactures ordnance including artillery, gun mounts, small arms, and grenade launchers.
Situated between the cities of Davenport, Iowa, and Rock Island, Illinois, this strategic location hosts the United States Army First Army Headquarters and the Army Center of Excellence for Additive Manufacturing. Census business data shows 390 employees across 15 establishments in this ZIP. With only 2 delivery codes on file, this designation handles official military correspondence. The designation predates 2004, and Rock Island remains the valid mailing city.
| Establishments: | 15 |
| Employment: | 390 |
Buildings registered in the USPS ZIP+4 database with designated codes for direct mail delivery.
ZIP Code 61299 supports both business and residential activity. According to the Business Census (2024), there are 15 business establishments, employing about 301 people with an annual payroll of $13,741,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 13Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 15Source: CBP |
| 1st Quarter Payroll: | $4,787,000Source: CBP |
| Annual Payroll: | $13,741,000Source: CBP |
| # of Employees: | 301Source: CBP |
ZIP Code 61299 is located in Rock Island County, Illinois, within the Davenport-Moline-Rock Island, IA-IL Metropolitan Statistical Area (CBSA 19340) and Illinois's 17th Congressional District. This Metro area has a population of 381,864 people, about 0.00% of whom live in ZIP Code 61299. It covers 0 sq mi of land and a water area of 0 sq mi.
| CBSA Name: | Davenport-Moline-Rock Island, IA-ILSource: Census |
| CBSA Number: | 19340Source: Census |
| CBSA Type: | MetroSource: Census |
| CBSA Division: | --Source: Census |
| CBSA Population: | 381,864Source: Census |
| MSA: | Davenport-Moline-Rock Island, IA-IL MSASource: Census |
| Land Area: | --Source: Census |
| Water Area: | --Source: Census |
| Congressional District: | 17Source: USPS |
| Congressional Land Area: | 6933.08 sq miSource: Census |
| PMSA: | --Source: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 1765078Source: Census |
| Place Name: | Rock Island city; IllinoisSource: Census |
We could not locate which school district 61299 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.