|Elevation||6 m (20 ft)|
|• Official||Bengali, English|
|Time zone||IST (UTC+5:30)|
|Vehicle registration||WB 12(A-Z)XXXX & WB11(A-Z)XXXX|
|Lok Sabha constituency||Howrah|
|Vidhan Sabha constituency||Sankrail|
Mahiari is located at  It has an average elevation of 6 m (20 ft)..
As per 2011 Census of India Mahiari had a total population of 18,223 of which 9,209 (51%) were males and 9,014 (49%) were females. Population below 6 years was 1,634. The total number of literates in Mahiari was 15,055 (90.75 % of the population over 6 years).
Mahiari was part of Kolkata Urban Agglomeration in 2011 census.
As of 2001[update] India census, Mahiari had a population of 15,422. Males constitute 51% of the population and females 49%. Mahiari has an average literacy rate of 77%, higher than the national average of 59.5%: male literacy is 81%, and female literacy is 73%. In Mahiari, 10% of the population is under 6 years of age.
Mahiari houses several industrial activity especially in the northern areas near Alampur. Leading industries are steel, engineering and instrumentation, motor vehicle, jewellery, dairy etc. Previously there was a large operation of Frigerio Conserva Allana Ltd at the southern part near Mourigram railway station. "Kamal Nursery" and "The Indian Nursery" two of the most famous names in the Indian horticulture industry are situated at Mahiari. Howrah Flower Growers' Association organize flower exhibition at Kamal Nursery every year. There are a number of markets including that of Mouri Bazar and Khatir Bazar. Mahiari has its renowned traditional industry of wooden furniture that caters clients from all over Kolkata and Howrah.
Mahiari of Howrah District is located about 3 km towards the north of Sankrail. Santragachi is to the north. Howrah and Kolkata lie within 15 km from Mahiari.
National Highway 6 passes nearby this town.
Howrah Bridge, Belur Math, Indian Botanic Garden, Bally Bridge and Santragachi Jheel are some of the tourist options in the neighborhood. Netaji Subhash Chandra Bose International Airport (25 km) and Howrah Railway Station(10 km),Santragachi Railway Station, Andul bus stand, Khatir bazar bus stand and Maurigram Railway Station serves Mahiari.
- "District-wise list of statutory towns". Census Commission of India. Retrieved 2009-01-28.
- Falling Rain Genomics, Inc - Mahiari
- Santra, Tarapada and Bandopadhyay, Amiya Kumar, Howrah Jelar Purakirti (in Bengali), pp. 115-116, Government of West Bengal
- "Pin-Codes of Howrah". A. Bharatiya Mobile. Retrieved 2014-10-31.
- "C.D. Block Wise Primary Census Abstract Data(PCA)". 2011 census: West Bengal – District-wise CD Blocks. Registrar General and Census Commissioner, India. Retrieved 11 May 2016.
- "Provisional Population Totals, Census of India 2011" (PDF). Constituents of Urban Agglomeration Having Population Above 1 Lakh. Census of India 2011. Retrieved 11 May 2016.
- "Census of India 2001: Data from the 2001 Census, including cities, villages and towns (Provisional)". Census Commission of India. Archived from the original on 2004-06-16. Retrieved 2008-11-01.
- "The Indian Nursery". Agriculture & Industry Survey. Retrieved 2011-05-21.
- "Kamal Nursery". The Telegraph. Retrieved 2013-01-11.
- "Mahiari". india9.com. Retrieved 2009-02-07.