| Aligarh district | |
| Settlement Type: | District of Uttar Pradesh |
| Subdivision Type: | Country |
| Subdivision Name: |  India |
| Subdivision Type1: | State |
| Subdivision Type2: | Division |
| Subdivision Name1: | Uttar Pradesh |
| Subdivision Name2: | Aligarh |
| Established Title: | Established |
| Seat Type: | Headquarters |
| Seat: | Aligarh |
| Parts Type: | Tehsils |
| Parts Style: | para |
| P1: | 5 |
| Government Type: | Municipal Corporation |
| Governing Body: | Aligarh Municipal Corporation |
| Leader Title: | Member of Parliament, Lok Sabha |
| Leader Name: | Satish Kumar Gautam, BJP |
| Unit Pref: | Metric |
| Area Total Km2: | 3788 |
| Population Total: | 3,673,889 |
| Population As Of: | 2011 |
| Population Footnotes: | [1] |
| Population Demonym: | Aligarian |
| Demographics Type1: | Language |
| Demographics1 Title1: | Official |
| Demographics1 Info1: | Hindi[2] |
| Demographics1 Title2: | Additional official |
| Demographics1 Info2: | Urdu |
| Demographics1 Title4: | Regional |
| Demographics1 Info4: | Braj |
| Demographics Type2: | Demographics |
| Demographics2 Title1: | Literacy |
| Demographics2 Info1: | 69.61% |
| Demographics2 Title2: | Sex ratio |
| Demographics2 Info2: | 894 |
| Leader Title1: | Lok Sabha constituency |
| Leader Name1: | Aligarh |
| Timezone1: | IST |
| Utc Offset1: | +5:30 |
| Postal Code Type: | PIN |
| Postal Code: | 202001, 202002 |
| Area Code: | 0571 |
| Blank Name Sec1: | Major highways |
| Blank Info Sec1: | NH91 |
| Area Code Type: | Telephone code |
| Registration Plate: | UP-81 |
Aligarh is one of the 75 districts in the northern Indian state of Uttar Pradesh. This district is a part of Aligarh Division. The districts which adjoin Aligarh are (clockwise from north) Gautam Buddha Nagar, Bulandshahr, Sambhal, Badaun, Kasganj, Hathras and Mathura.
According to the 2011 census, Aligarh district has a population of 3,673,889,[3] roughly equal to the nation of Mauritania[4] or the US state of Oklahoma.[5] This gives the district a ranking of 76th in India (out of a total of 640 districts).[3] The district has a population density of 100PD/sqkm.[3] Its population growth rate over the 2001-2011 decade was 22.78%.[3] Aligarh has a sex ratio of 876 females for every 1,000 males,[3] and a literacy rate of 69.61%. 33.13% of the population lived in urban areas. Scheduled Castes make up 20.56% of the population.[3]
At the time of the 2011 Census of India, 92.54% of the population in the district spoke Hindi, 5.34% Urdu and 1.90% Braj bhasha as their first language.[6] The local language is Braj bhasha.
In 1941 to 1991 Census Aligarh District Includes the following tehsils
Following Creation of Hathras District In 1997 Hathras, Sikandra Rao, Iglas. Later Iglas was again returned to Aligarh District.