United States - Literacy Rate, Adult Total for Upper Middle Income Countries was 95.61952 % of People Ages 15 and Above in January of 2023, according to the United States Federal Reserve. Historically, United States - Literacy Rate, Adult Total for Upper Middle Income Countries reached a record high of 95.79682 in January of 2020 and a record low of 69.21488 in January of 1976. Trading Economics provides the current actual value, an historical data chart and related indicators for United States - Literacy Rate, Adult Total for Upper Middle Income Countries - last updated from the United States Federal Reserve on April of 2026.