Rock Island Arsenal is a community in Rock Island County, Illinois, home to about 470 people across 1.6 square miles. It has no ZIP code of its own: it’s part of 61201.
Homes sold for a median of $121 per square foot in the three months ending August 2026, a seller’s market.
Mostly Rock Island; part is in Rock Island Arsenal
Each card is that ZIP code’s whole market, including any part outside Rock Island Arsenal. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Rock Island Arsenal’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Chicago O'Hare International Airport (ORD)141 miles away |
|---|---|
| Closer regional airport | Quad City International Airport (MLI)4 miles away |
| Nearest city of 250,000+ | Madison, WI125 miles away |
| Nearest city of 1 million+ | Chicago, IL150 miles away |
Straight-line distances from the center of Rock Island Arsenal; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Rock Island Arsenal had 182 residents in the 2020 census, up 26% since 2000.
It’s the 955th largest of 1,450 towns in Illinois by population.
Rock Island County grew from 55,249 residents in 1900 to 144,672 in 2020.
Rock Island County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 84°F in summer, and winter lows average 13°F. About 38.7 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Rock Island L&D 15, IL weather station (2 miles away).
64,307 jobs at 2,992 businesses in Rock Island County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
522 doctors and other health care providers list an office in Rock Island Arsenal.
Nearest hospitals
Providers with an office here
| Primary care doctors | 19 |
|---|---|
| Specialist doctors | 73 |
| Dentists | 16 |
| Nurse practitioners and physician assistants | 46 |
| Mental health providers | 291 |
| Physical and occupational therapists | 42 |
| Optometrists | 14 |
| Chiropractors | 21 |
| Pharmacies | 7 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Parks (6 nearby)
Grocery stores (3 nearby)
Pharmacies (2 nearby)
Libraries (2 nearby)
Museums (1 nearby)
Theaters and performance venues
Counts are within about 1 mile of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Public schools here are run by Rock Island SD 41. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Earl H Hanson Elem SchoolRock Island | Pre-K–6 | 201 | Public | 1.8 mi |
| Frances Willard Elem SchoolRock Island | Pre-K–6 | 312 | Public | 1.1 mi |
| Horace Mann ELCRock Island | Pre-K | 387 | Public | 1.6 mi |
| Longfellow Elem SchoolRock Island | Pre-K–6 | 262 | Public | 1.4 mi |
| RicmsRock Island | Pre-K–6 | 462 | Public | 0.5 mi |
| Ridgewood Elem SchoolRock Island | Pre-K–6 | 260 | Public | 4.8 mi |
| Rock Island AcademyRock Island | Pre-K–6 | 540 | Public | 1.1 mi |
| Denkmann Elem SchoolRock Island | K–6 | 356 | Public | 1.1 mi |
| Eugene Field Elem SchoolRock Island | K–6 | 496 | Public | 0.9 mi |
| Thurgood Marshall Learning CtrRock Island | 6–12 | — | Public | 1.4 mi |
| Edison Jr High SchoolRock Island | 7–8 | 398 | Public | 1.8 mi |
| Washington Jr High SchoolRock Island | 7–8 | 529 | Public | 0.6 mi |
| Rock Island High SchoolRock Island | 9–12 | 1,812 | Public | 0.7 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| Jordan Catholic SchoolRock Island | Pre-K–8 | 295 | Roman Catholic | 0.7 mi |
| Alleman High SchoolRock Island | 9–12 | 264 | Roman Catholic | 1.2 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools; Private School Universe Survey (2023-2024) for private schools. Listed by address; we don’t rate schools.
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Shares ZIP codes with Rock Island.
Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.