Hart's Green is a small hamlet located within the civil parish of Willingale, in the English county of Essex. It is situated to the north-east of the main village of Willingale and lies approximately 7 miles (11 km) north-west of Chelmsford, the county town.
As a rural settlement, Hart's Green is characterized by a cluster of residential properties, including a mix of older cottages and more modern houses. The immediate area is predominantly agricultural, with open fields and scattered woodland typical of the Essex countryside. The hamlet does not feature significant commercial or industrial developments, maintaining a quiet, residential character. Access to Hart's Green is primarily via local country lanes that connect it to Willingale and other nearby villages. It forms part of the wider Willingale parish, which itself is known for its historic churches and rural setting.