In the far south of the regency (Sukorame, Bluluk, Ngimbang, Sambeng, Mantup and Modo Districts), and also in the northern coastal area (Brondong, Paciran and Solokuro Districts) are limestone mountains with land of medium fertility.

Between the coastal uplands and the Solo River, much of the region consists of 'bonorowo' wetlands prone to periodic flooding (chiefly Glagah, Karangbinangun, Turi, Kalitengah, Karanggeneng, Laren, Maduran and Sekaran Districts).

The remaining areas close to and south of the Solo River comprise lowlands of limited fertility (Kembangbahu, Sugio, Kedungpring, Babat, Pucuk, Sukadadi, Lamongan, Tikung, Sarirejo and Deket Districts).

Lamongan Regency is bordered by: The economy is mainly supported by agriculture, fishery, and commerce, especially the home industry.

(b) comprises 8 kelurahan (Banjarmendalan, Jetis, Sidoharjo, Sidokumpul, Sukomulyo, Sukorejo, Tlogoanyar and Tumenggungan) and 12 desa.