Haven for Workers in Bronx Evolves for Their Retirement
Co-Op City, sprawling apartment complex in northeast Bronx carefully designed as dream home for civil servants and garment workers in 1960's, is transformed by its nearly 8,000 aging residents into largest de facto retirement home in nation; once attracted young families with promise of low-cost homes who cared for families there for decades, but who now need care of their own; experts say such naturally occuring retirement communities (NORCs) are cropping up nationwide as baby boomers creep toward frailty and immobility of old age; predict in next 30 years as many as 63 million elderly men and women will be living in their own homes, which were not designed for aged; photo (M)
