Introduction: The Metabolic Syndrome (MS) is a multifactorial disease associated with central obesity, hypertension, atherogenic dyslipidemia and impaired glucose tolerance. Low grade inflammatory and a prothrombotic state are also involved in MS. Aim: To explore the demographic and biochemical parameters of participants with MS in Terai region of Nepal using community based cross-sectional study. Materials and Methods: A cross-sectional study was carried out during September 2019-December 2019 in adult participants with central obesity (n=378) selected from three districts of Terai region of Nepal. International Diabetes Federation (IDF) criteria were used to define MS. The C-reactive protein-ultra sensitive, fibrinogen, and apolipoprotein-B were estimated as inflammatory, prothrombotic, and atherogenic dyslipidemia markers, respectively. Results: The MS was present in 283 participants with central obesity. The mean (±SD) age, height, weight, and BMI of the participants with MS were 46.36±12.52 years, 5.56±0.11 feet, 66.54±13.45 kg and 27.28±4.98 kg/m2, respectively. The mean (±SD) of biochemical factors were significantly different than their respective normal ranges: decreased serum High Density Lipoprotein (HDL) cholesterol in mg/dL (male: 34.50±9.93, p<0.001, female: 36.77±7.28, p<0.001), raised serum triglycerides level- 184.96±85.72 mg/dL (p<0.001), and impaired fasting serum glucose level 108.14±48.27 mg/dL (p=0.002). Significant increase in inflammatory (CRP-US: 1.12±2.17 mg/L, p<0.001), prothrombotic (fibrinogen: 3.42±1.04 gm/L, p<0.001) and atherogenic dyslipidemia marker (Apo-B: 149.35±59.13 mg/dL, p=0.003) from normal values were observed in subjects with MS. Conclusion: Lowered serum HDL cholesterol, increased triglycerides followed with impaired fasting glucose tolerance were observed as the major abnormal biochemical parameters and increased inflammatory and prothrombotic activities were present among participants with MS.