| Official Name: | Thakurgaon Sadar |
| Native Name: | ঠাকুরগাঁও সদর |
| Settlement Type: | Upazila |
| Coordinates: | 26°N 88°W |
| Subdivision Type: | Country |
| Subdivision Name: |  Bangladesh |
| Subdivision Type1: | Division |
| Subdivision Type2: | District |
| Seat Type: | Headquarters |
| Subdivision Name1: | Rangpur |
| Subdivision Name2: | Thakurgaon |
| Seat: | Thakurgaon |
| Area Total Km2: | 654.95 |
| Population Total: | 581227 |
| Population As Of: | 2011 |
| Population Density Km2: | auto |
| Postal Code Type: | Postal code |
| Postal Code: | 5100 |
| Timezone: | BST |
| Utc Offset: | +6 |
Thakurgaon Sadar (Bengali: ঠাকুরগাঁও সদর) is an upazila of Thakurgaon District in the Division of Rangpur, Bangladesh.
Thakurgaon Sadar is located at 26.0208°N 88.4667°W. It has 133,320 households and total area 654.95 km2. It is bounded by Atwari and Boda upazilas on the north, Pirganj and Birganj upazilas on the south, Boda, Debiganj and Birganj upazilas on the east, Baliadangi and Ranisankail upazilas on the west.
According to the 2011 Bangladesh census, Thakurgaon Sadar Upazila had 133,320 households and a population of 581,227. 130,768 (22.50%) were under 10 years of age. Thakurgaon Sadar had a literacy rate (age 7 and over) of 53.27%, compared to the national average of 51.8%, and a sex ratio of 980 females per 1000 males. 93,213 (16.04%) lived in urban areas.[1] Ethnic population was 3,721 (0.64%), of which Santal were 2,256.[2]
According to the 2001 Bangladesh census, Thakurgaon sadar upazila has a population of 504428; males 260515, females 243913; Muslim 369486, Hindu 129794, Christian 3614, Buddhist 38 and others 1496. Indigenous communities such as Santal, Oraon, Munda, Mushar and Rajbanshi belong to this upazila.[3]
As of the 1991 Bangladesh census, the upazila has a population of 422728. Males constitute 51.7% of the population, and females 48.3%. This Upazila's eighteen up population is 214112. Thakurgaon Sadar has an average literacy rate of 30.1% (7+ years), and the national average of 32.4% literate.[4]
Thakurgaon Sadar Thana formed in 1800 and it was turned into an upazila in 1984.[5]
Thakurgaon Upazila is divided into Thakurgaon Municipality and 19 union parishads: Akhanagar, Akcha, Auliapur, Balia, Baragaon, Begunbari, Chilarang, Debipur, Gareya, Jagannathpur, Jamalpur, Mohammadpur, Nargun, Rahimanpur, Rajagaon, Ruhea, Roypur, Salandar, and Sukhanpukhari. The union parishads are subdivided into 194 mauzas and 198 villages.[1]