Karaj is a city located in Iran, just northwest of the capital, Tehran. It serves as a significant urban center and is known for its rapid population growth and development. The city is well-connected to Tehran through major highways and public transportation, making it a popular residential area for those working in the capital. The economy of Karaj is diverse, with industries such as manufacturing, agriculture, and services playing important roles. The city is also home to several educational institutions, including universities, which contribute to its vibrant community. Additionally, Karaj is surrounded by natural beauty, including mountains and parks, offering recreational opportunities for residents and visitors alike.