Flagg township, Illinois
Flagg township profile, demographic data, and geographic information.
Flagg township is a geographic entity located in Ogle County, Illinois. As of official census estimates, it has a reported population of 13,335. The land area covers 35.55 sq mi. [1]
Demographics & Population
| Demographic Metric | Estimate / Count | Margin of Error | Survey Period / Source |
|---|---|---|---|
| Total Population (2025 PEP Estimate) | 13,335 | — | 2025 / Census |
| Median Age | 37.1 yrs | ±2.4 | 2020-2024 / Census ACS 5-Year 2024 |
| Total Households | 5,166 | ±230 | 2020-2024 / Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).
Housing & Real Estate Profile
| Housing Metric | Estimate / Value | Margin of Error |
|---|---|---|
| Total Housing Units | 5,486 | ±248 |
| Occupied Housing Units | 5,166 | ±230 |
| Vacant Housing Units | 320 | ±180 |
| Median Home Value | $169,000 | ±$7,621 |
| Median Gross Rent | $1,010 | ±$84 |
Source: U.S. Census Bureau ACS 5-Year (2020-2024).
Economy & Workforce
| Economic Metric | Estimate / Value | Margin of Error |
|---|---|---|
| Median Household Income | $74,423 | ±$10,386 |
| Per Capita Income | $35,677 | ±$3,119 |
| Poverty Rate | 7.1% | ±2% |
| Population Below Poverty Level | 931 | ±266 |
| Unemployment Rate | 7.2% | ±2.3% |
| Civilian Labor Force, Employed | 6,756 | ±387 |
| Broadband Internet Rate | 91.2% | ±2.7% |
Source: U.S. Census Bureau ACS 5-Year (2020-2024).
Local Government & Public Administration
Authoritative general-purpose local government units serving this area
U.S. Census Bureau GUS (2026) / GMAF
| Government Unit | Unit Type | Jurisdiction Role | Contact / Address |
|---|---|---|---|
|
GUS Population: 13,343 (2024)
ID: 163213
|
Township | Official Local Government |
Contact: SUPERVISOR
PO BOX 436, ROCHELLE IL 61068-0436
|
|
GUS Population: 51,345 (2024)
ID: 162155
|
County | Official County Government |
Contact: TREASURER
105 S 5TH ST, OREGON IL 61061-1602
|
Education
Listing 10 local institutions (NCES 2024-2025)
External reference via K12Guides
| Institution | Type | Grades | Location |
|---|---|---|---|
| Regular School Nearby | 09-12 | Amboy, IL | |
| Regular School Nearby | 05-08 | Amboy, IL | |
| Regular School Nearby | PK-06 | Franklin Grove, IL | |
| Regular School Nearby | 07-12 | Ashton, IL | |
| Regular School Nearby | 09-12 | Byron, IL | |
| Regular School Nearby | 06-08 | Byron, IL | |
| Regular School Nearby | 02-03 | Rochelle, IL | |
| Special Education School Nearby | KG-12 | Chana, IL | |
| Regular School Nearby | KG-08 | Creston, IL | |
| Regular School Nearby | KG-08 | Lindenwood, IL |
Source: k12guides.com.
Community Facilities & Infrastructure
Displaying 10 civic institutions across 2 datasets queried
CMS • IPEDS • IMLS
| Facility Name | Category | Relationship | Address / Location | Contact |
|---|---|---|---|---|
|
Kishwaukee College
|
College | 12.1 mi away | 21193 Malta Rd, Malta, IL, 60150-9699 |
8158252086
|
|
FLAGG-ROCHELLE PUBLIC LIBRARY DISTRICT
|
Library | 2.6 mi away | 619 FOURTH AVENUE, ROCHELLE, IL, 61068 |
(815) 562-3431
|
|
Northern Illinois University
|
College | 18.0 mi away | 1425 W. Lincoln Hwy., Dekalb, IL, 60115-2828 |
8008923050
|
|
MILLS & PETRIE MEMORIAL LIBRARY AND GYMNASIUM
|
Library | 7.3 mi away | 704 NORTH FIRST STREET, ASHTON, IL, 61006 |
(815) 453-2213
|
|
Debutantes School of Cosmetology and Nail Technology
|
College Vocational | 18.8 mi away | 145 N. 3rd Street, Dekalb, IL, 60115-3301 |
8157584045
|
|
CRESTON-DEMENT PUBLIC LIBRARY DISTRICT
|
Library | 7.8 mi away | 107 SOUTH MAIN STREET, CRESTON, IL, 60113 |
(815) 384-3111
|
|
Hair Professionals Career College
|
College Vocational | 20.5 mi away | 2245 Gateway Drive, Sycamore, IL, 60178 |
8157563596
|
|
FRANKLIN GROVE PUBLIC LIBRARY
|
Library | 11.5 mi away | 112 SOUTH ELM STREET, FRANKLIN GROVE, IL, 61031 |
(815) 456-2823
|
|
Stautzenberger College-Rockford Career College
|
College | 22.6 mi away | 1130 South Alpine Road Suite 100, Rockford, IL, 61108-3900 |
8159658616
|
|
JULIA HULL DISTRICT LIBRARY
|
Library | 11.9 mi away | 100 LIBRARY LANE, STILLMAN VALLEY, IL, 61084 |
(815) 645-8611
|
Distances calculated from authoritative source coordinates. Source: CMS, IMLS, NCES IPEDS.
Climate & Weather Observations
NOAA Monthly Climate Normals
Observation Station: Climate data reflects NOAA 1991–2020 standard normals recorded at ROCHELLE, IL US, located 2.9 miles from Flagg township. Local microclimates, topography, and elevation may cause municipal conditions to differ.
| Month | High (°F) | Low (°F) | Mean (°F) | Precip (in) | Snow (in) |
|---|---|---|---|---|---|
| January | 28.1° | 12.1° | 20.1° | 1.78" | — |
| February | 32.1° | 15.5° | 23.8° | 1.70" | — |
| March | 45.1° | 26.1° | 35.6° | 2.27" | — |
| April | 58.7° | 36.6° | 47.6° | 3.44" | — |
| May | 70.0° | 48.1° | 59.0° | 4.69" | — |
| June | 79.2° | 58.5° | 68.9° | 4.92" | — |
| July | 82.2° | 61.4° | 71.8° | 3.55" | — |
| August | 80.7° | 59.8° | 70.2° | 3.92" | — |
| September | 75.0° | 51.8° | 63.4° | 3.26" | — |
| October | 62.2° | 39.8° | 51.0° | 2.81" | — |
| November | 46.6° | 28.8° | 37.7° | 2.30" | — |
| December | 33.7° | 18.3° | 26.0° | 1.95" | — |
Source: NOAA U.S. Climate Normals (1991–2020).
Local Weather Forecast
Weather forecast data is currently unavailable in the local cache.
Nearby Cities & Communities
Listing adjacent communities by spatial proximity (miles)
Proximity discovery
| Community Name | Classification | Distance | Population |
|---|---|---|---|
| Rochelle city | City | 3.0 mi | — |
| Hillcrest village | Village | 3.5 mi | — |
| Kings CDP | CDP | 4.7 mi | — |
| Ashton village | Village | 7.3 mi | — |
| Creston village | Village | 7.3 mi | — |
| Steward village | Village | 7.8 mi | — |
Sources & Data Provenance
- Geographic Classification & Identifiers: U.S. Census Bureau Gazetteer (2026) and TIGER/Line Shapefiles. GEOID: 1714126298. • Official Source Dataset →
- Socioeconomic & Housing Metrics: U.S. Census Bureau American Community Survey (ACS) 5-year estimates and Population Estimates Program (PEP). Margin of Error (MOE) intervals are reported where published; suppressed values are never estimated or replaced with false zeros.
- Civic Directory Datasets: Centers for Medicare & Medicaid Services (CMS Hospital Directory), National Center for Education Statistics (NCES IPEDS Postsecondary Directory), and Institute of Museum and Library Services (IMLS Public Libraries Survey). Airport landing facilities are provided by airport-data.com.
- Weather & Climate Observations: National Oceanic and Atmospheric Administration (NOAA) U.S. Climate Normals 1991–2020 and National Weather Service (NWS) point forecasts.