Few proven dementia care programs are integrated into community-based agencies. We report acceptability and effectiveness of an evidence-based program, COPE, delivered by community-based agency staff. Pre-test/post-test design with three data points (baseline, 3- months program completion, 6-month follow-up). COPE was delivered by six occupational therapists and four social workers at two agency sites with people living with dementia and caregivers. Staff assessed s the interests and abilities of people living with dementia, home safety, and caregiver challenges, and readiness to learn strategies. Staff provided dementia education, stress reduction and nonpharmacological techniques tailored to caregiver-identified challenges. Acceptability (3-and 6-months), included completed sessions, upset with and confidence managing care challenges, strategies used, and program satisfaction. Effectiveness (3-and 6-months) included people living with dementia's health events (falls, emergency room visits, hospitalizations, 911 calls), rehospitalization risk and functional dependence; and caregiver wellbeing and readiness. Benefits by in-person (n=188) versus virtual/hybrid (n=46) delivery due to COVID were evaluated. Of 843 dyads screened, 271 (32.1%) enrolled, 246 (90.8%) completed COPE and 234 (95.1%) completed >1followups. Regarding acceptability, caregivers completed about 8 sessions, reported improved confidence and upset (ps<0.001s), most implemented strategies 3-months (72.8%) and 6-months (83.5%) and expressed high program satisfaction. For effectiveness, compared to baseline, odds of people living with dementia's health events were lower including rehospitalization risk, although functional dependence increased; caregiver wellbeing (3, 6-months, ps<0.001s) and readiness (3-months, p<01) improved. Outcomes did not differ by delivery mode. Acceptability and effectiveness were strong. COPE resulted in tangible improvements for families regardless of delivery mode.