Key facts
- HMT Colony in North Kalamassery has its own sub post office with PIN code 683503.
- Government Medical College, Ernakulam is on HMT Road in HMT Colony, North Kalamassery.
- Kalamassery railway station, on the Ernakulam–Aluva line, is on NAD Road.
- The Seaport–Airport Road’s missing 2.7 km stretch between HMT and the Naval Armament Depot was put out to tender in January 2026, with about 12 months allowed for construction.
- HMT Colony grew around the Kalamassery factory of HMT (Hindustan Machine Tools), the public-sector machine-tool maker.

A township first, a suburb later
Much of North Kalamassery was shaped by HMT, the public-sector machine-tool company, whose Kalamassery factory brought staff quarters, roads and schools to what had been open land. That is why the area still feels planned in places – wide plots, old trees, institutional walls – rather than built up shop by shop like the highway. Our HMT Kalamassery guide tells that story.
Today the township land hosts newer neighbours: the KINFRA Hi-Tech Park (with Kerala Startup Mission’s base) and, under construction, the Adani Logistics Park between HMT and the Medical College. See KINFRA Hi-Tech Park.
The PIN code and the address puzzle
HMT Colony has its own sub post office, PIN 683503, and you will see “HMT Colony” or “North Kalamassery” on addresses for the Medical College and St. Paul’s College. Confusingly, some addresses in this belt – including the hostel’s own – also carry “Aluva”, the nearest big town, as a postal reference. Couriers generally manage, but always give a landmark. Our post office and PIN codes guide sorts out the rest.
Institutions you will hear about
- Government Medical College, Ernakulam – on HMT Road. Students, house surgeons and staff are a big part of local life; see PG near the Medical College.
- Cochin Cancer Research Centre – on the Medical College side; patients’ families often need nearby rooms.
- St. Paul’s College – listed at HMT Colony.
- Kendriya Vidyalaya NAD – a central-government school whose postal address is NAD Kalamassery, Aluva.
- The Naval Armament Depot – the Navy establishment that gives NAD Road its name. It is restricted; do not photograph it. Background in NAD Aluva: what it is.
Roads: NAD Road, HMT Road and the unfinished bypass
Two local roads matter. HMT Road links HMT Junction on NH 544 with HMT, KINFRA and the Medical College. NAD Road runs from the Kalamassery side, past Kalamassery railway station, towards the depot area near Aluva. Neither carries the through-traffic of the national highway – our NAD Road guide goes into detail.
The Seaport–Airport Road is meant to cut through here. Its first phase, from Kalamassery HMT south to Karingachira near Tripunithura, opened in 2003. The 2.7 km link between HMT and NAD stalled for about two decades over defence and HMT land; Onmanorama reported in January 2026 that tenders had finally been invited, with 12 months for construction. Until it opens, expect some work zones. See the Seaport–Airport Road guide.
Everyday life
Shops on the HMT Colony side are fewer and simpler than at HMT Junction: tea shops, small groceries and eateries near the Medical College junction. For a full shop most people ride to HMT Junction or take the metro to Edappally. Evenings are noticeably quieter than the highway, which suits students and night-shift workers who need day sleep.
Walking at night: some institutional stretches are long and dimly lit. Carry a torch on your phone and keep to the main roads after dark.
Ashraf Gents Hostel, a neighbour in HMT Colony’s PIN
Ashraf Gents Hostel (also known as Ashraf Gents PG Hostel) is at Ashraf house, NAD Road, at the signal – Kalamassery, PIN 683563 – in the middle of this neighbourhood. It is a boys’ hostel and PG for students, staff and working men; women are not accommodated. The public profile lists the Medical College, the Cochin Cancer Research Centre, NUALS, the Science Park, the Nippon skill centre, the Adani port area and the Seaport–Airport Road as within about 3 km.
You can see the twin-sharing rooms, red-oxide floors, balcony, kitchen and tiled bathroom in the photo gallery. The indicative rate is about ₹2,000–3,000 per head per month, negotiable, with one month’s advance; call or WhatsApp +91 90746 23855 to confirm the current charge, vacancies, and what is or is not included.
Frequently asked questions
What is the PIN code of HMT Colony, Kalamassery?
683503. It is served by the HMT Colony sub post office.
Is the Medical College in North Kalamassery?
Yes. Government Medical College, Ernakulam is on HMT Road in HMT Colony, North Kalamassery.
Is there a railway station near HMT Colony?
Kalamassery railway station is on NAD Road, on the Ernakulam–Aluva line, and is used mainly by passenger and MEMU trains.
When will the HMT–NAD Seaport–Airport Road stretch open?
Tenders were invited in January 2026 with a 12-month construction period, so early 2027 was the target. Treat that as an estimate and check local news.
Related guides
Sources
- pin.codes.in: HMT Colony SO, 683503
- Onmanorama: Seaport–Airport Road Phase 2 tender (Jan 2026)
- Wikipedia: Seaport-Airport Road
- Government Medical College, Ernakulam: Location
- PM SHRI Kendriya Vidyalaya NAD Aluva
Facts about Ashraf Gents Hostel come from the hostel’s own profile and photos; rates are indicative and confirmed on the call. Last reviewed . How we write these guides: editorial notes. Map embeds © Google.