ONS Demographics now live in Terain

UK Census 2021 demographic intelligence, resolved to postcode level and available now for both resident and visitor cohort profiling.

Terain now carries demographic markers direct from the UK Office for National Statistics, alongside our existing Experian offer. Built on the 2021 Census — the most authoritative population dataset in the country — these metrics bring resident and visitor cohorts to life with genuine, response-based accuracy, and provide a great alternative to the established UK demographic offerings.

National coverage, postcode-level granularity

Eight launch markers are available today, with more to come as the ONS catalogue is added to Terain.

The launch markers

Age by Five-Year Bands

Read the age structure of any catchment band by band, from young professionals to retirees. (15+ population.)

Length of Residence

Tell settled, long-standing communities apart from transient, high-churn areas.

Distance Travelled to Work

Gauge how far a location's workforce commutes — a proxy for daytime draw and connectivity.

Method of Travel

See how people move — car, public transport or on foot — to inform access and catchment planning.

Occupation

Profile the working population by occupation group to read the economic character of an area.

Accommodation Type

Understand the housing mix — detached, terraced, flats — behind a catchment's households.

Highest Level of Qualification

Read the education profile of residents, from no formal qualifications through to degree level.

General Health

Benchmark self-reported health across an area — valuable for wellbeing and public-sector use cases.

Just the beginning

Eight markers is our launch set, not our endpoint. The ONS catalogue runs to hundreds of variables, and we will expand the available metrics as client demand takes shape. This is the first of several steps we are taking to ensure Terain has the most comprehensive demographic offer in the market.