TWIN CHIMNEYS ELEM.

Located at 7396 TWIN CHIMNEYS BLVD, in O'FALLON, Missouri, TWIN CHIMNEYS ELEM. is an expansive elementary campus that teaches 488 students (grades K through 5), overseen by FORT ZUMWALT SCHOOL DISTRICT. That puts it 55% larger than the typical public school in Missouri, which averages around 315 students.

Across the 25 schools in FORT ZUMWALT SCHOOL DISTRICT (16,698 students total), TWIN CHIMNEYS ELEM. accounts for its share of the district's footprint.

Demographically, TWIN CHIMNEYS ELEM. records that 68% of the student body identifies as White. Beyond that, the school shows 15% Asian, 8% multiracial, 5% Black, 3% Hispanic. That is visibly less White than the county at large, where the share is closer to 84%.

Looking at school resources, Staff filings list 38 full-time-equivalent teachers, which works out to roughly 12.9:1 students per teacher. That tracks the state average closely. Roughly 8% of students at TWIN CHIMNEYS ELEM. qualify for free or reduced-price lunch, a commonly cited indicator of low-income enrollment. Set against St. Charles County (around 19%), the school's rate is noticeably below typical.

With demographic context factored in, TWIN CHIMNEYS ELEM. performs roughly as the BeatsExpectations model predicts for a school with this FRL share. The predicted value is around 51.1%, the actual is 48.7%, a residual of -2.4 points.

Around the school, ACS estimates for St. Charles County put median household earnings sit near $104,692, 43% of adults hold a bachelor's degree or higher, and roughly 4% of residents live below the federal poverty line. Across St. Charles County's 93 public schools (combined enrollment of about 59,314 students), TWIN CHIMNEYS ELEM. is one campus in the mix.

OSTMANN ELEM. is the nearest neighboring public school, about 0.6 miles from this campus. Within five miles, there are 8 other public schools. On composite proficiency, TWIN CHIMNEYS ELEM. comes 6th of 8 in the immediate cluster, beneath the nearby-schools average of 55.1%.

The campus sits in an outer-ring setting.

Five-year trend. Looking back 7 years, enrollment at TWIN CHIMNEYS ELEM. has increased 6%, going from 461 students in 2018 to 488 in 2025. Over the same period, the White share contracted from 76% to 68%.

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