E63012371 /South East evidence profile
South East evidence profile
Chatham digital planning profile
Chatham is a large, coastal built-up area in South East. ONS records show a 2021 population of 76,956; the population grew steadily between 2001 and 2021, while the 2015 to 2024 employment series shows strong employment expansion. This profile turns those public observations into a reviewable website-planning brief without claiming that the figures measure searches, leads or Mosalio's physical presence.
01 / Data snapshot
What the reviewed source records
- BUA24 code
- E63012371
- ITL1 region
- South East
- Coastal
- Coastal
- Income-deprivation flag
- Higher deprivation
02 / Context
Three comparisons, with the benchmark stated
4.5% below the 11.2% median across complete England records in this ONS file.
14.3% above the 0% dataset median.
55.2% above the 224.1% dataset median.
These medians use every complete England record accepted from the same ONS file. They are descriptive context, not targets, forecasts or a national demand model.
03 / Distinctive pattern
Where this record sits within 936 complete England profiles
Lower quartile · percentile position 10.2 of 100.
Upper quartile · percentile position 89.4 of 100.
Upper quartile · percentile position 89 of 100.
These are the three values furthest from the middle percentile position for this record. A higher position means a higher published value, not a better outcome or evidence of search demand.
Evidence fingerprint: sha256:4f3b2b203ac…5e22c383422b
04 / Constrained peers
Three named comparisons from the same reviewed source
Each peer is selected from all 936complete England records using the documented eight-metric distance. Deltas are Chatham minus the named peer; a plus sign means the value recorded for Chatham is higher.
Regional peer
Gillingham (Medway) · E63012307
South East. Nearest complete record in South East. ONS classification: Nearer - Higher deprivation - Mixed.
- 2021 population
- -31,529 people
- Population change, 2001 to 2021
- -3.1 pp
- Economic inactivity
- -1.2 pp
- Employment change, 2015 to 2024
- +8.7 pp
- 2023 median house price
- -£30,000
- House-price growth, 2001 to 2023
- +11.8 pp
- Population aged under 25
- +1.1 pp
- Population aged 65 or over
- -2.7 pp
Classification peer
Stretford · E63008422
North West. Nearest complete record outside South East with the same ONS combined classification. ONS classification: Nearer - Higher deprivation - Residential.
- 2021 population
- +48,946 people
- Population change, 2001 to 2021
- -6.3 pp
- Economic inactivity
- +0.9 pp
- Employment change, 2015 to 2024
- +14.3 pp
- 2023 median house price
- +£15,000
- House-price growth, 2001 to 2023
- -11.7 pp
- Population aged under 25
- +1 pp
- Population aged 65 or over
- +1.1 pp
National peer
Rochester · E63012252
South East. Nearest remaining complete England record. ONS classification: Nearer - Higher deprivation - Working.
- 2021 population
- +9,677 people
- Population change, 2001 to 2021
- -9 pp
- Economic inactivity
- -0.2 pp
- Employment change, 2015 to 2024
- +3.2 pp
- 2023 median house price
- -£34,500
- House-price growth, 2001 to 2023
- +1.9 pp
- Population aged under 25
- +1.6 pp
- Population aged 65 or over
- -1.2 pp
05 / Evidence synthesis
Chatham evidence synthesis: Population aged 65 or over, 2021 population, Population aged under 25
Chatham is recorded as a large, coastal, residential built-up area, nearer to a major town or city. This classification sets a transparent frame for the three observations below; it is not a persona, a service-area promise or proof of local search demand. Each finding pairs one distinctive percentile measure with one independently selected peer and one explicit validation route.
Eight-metric evidence matrix
The matrix shows every measure used by the peer-distance method, not only the three most distinctive values. Direction describes the published value relative to the middle percentile position; it is not a positive or negative judgement.
Highest-to-lowest percentile order: 2021 population → Population aged under 25 → House-price growth, 2001 to 2023 → Employment change, 2015 to 2024 → 2023 median house price → Population change, 2001 to 2021 → Economic inactivity → Population aged 65 or over.
Furthest-to-nearest distance from the middle percentile: Population aged 65 or over → 2021 population → Population aged under 25 → House-price growth, 2001 to 2023 → Economic inactivity → Employment change, 2015 to 2024 → Population change, 2001 to 2021 → 2023 median house price.
Regional peer
Population aged 65 or over: 14.6% · Gillingham (Medway) delta -2.7 pp
Among the eight reviewed measures, population aged 65 or over stands out for Chatham at 14.6%; its percentile position is 10.2 and its band is lower quartile. The constrained regional comparison is Gillingham (Medway) (E63012307). On this measure, Chatham minus that record is -2.7 pp; the selection basis is nearest complete record in south east. Treat this combination as a hypothesis about readability, keyboard access and assisted alternatives, and test it through inclusive usability sessions and accessibility conformance checks. The responsible interpretation stops short of intent: an age-group share does not determine digital ability.
Classification peer
2021 population: 76,956 · Stretford delta +48,946 people
At 76,956, 2021 population places Chatham in the upper quartile and at percentile 89.4 of the reviewed distribution. The constrained classification comparison is Stretford (E63008422). On this measure, Chatham minus that record is +48,946 people; the selection basis is nearest complete record outside south east with the same ons combined classification. Its practical use is to frame—not answer—a question about content hierarchy and service-capacity assumptions; the next evidence should come from task-frequency interviews and observed completion data. The responsible interpretation stops short of intent: population size does not establish addressable demand.
National peer
Population aged under 25: 31.8% · Rochester delta +1.6 pp
The reviewed record positions Chatham at percentile 89 for population aged under 25; its published value is 31.8% and its band is upper quartile. Rochester, the named national peer from South East, differs by +1.6 pp when the calculation is Chatham minus peer. Nearest remaining complete England record. A defensible brief can turn the pair into a verification task for mobile task speed, privacy explanation and channel continuity, using cross-device usability sessions without age-based assumptions before changing the information architecture. No user or market conclusion follows automatically; an age-group share does not determine channel preference.
The distinctive metrics are not interchangeable: population aged 65 or over, 2021 population, population aged under 25 each raise a different planning question when read beside Gillingham (Medway), Stretford, Rochester. For Chatham, the safe next step is therefore three small verification tasks rather than one demographic persona, locality claim or generic area-page conclusion.
06 / Evidence interpretation
Planning signals before design decisions
Population context: 76,956 people in 2021
Chatham's recorded population changed from 72,100 in 2001 to 76,956 in 2021 (+6.7%). This historical direction can inform content governance and capacity planning, but it is not a forecast and does not establish demand for a particular service.
Audience context: 14.6% aged 65 or over
The 2021 age-group series records 16,760 people aged 0 to 15, 7,707 aged 16 to 24, 41,234 aged 25 to 64 and 11,247 aged 65 or over. Small differences from the headline population reflect the published source series; percentages here use the age-group total and should guide testing questions, not stereotypes.
Activity context: 36.3% economically inactive
ONS records economic inactivity at 36.3%. The published composition includes 17.5% retired, 4.8% long-term sick or disabled, 4.6% students and 5.9% looking after home or family. These categories support inclusive task design; they do not identify individual users or purchasing intent.
Economic context: £275,000 median house price in 2023
The median house-price series moved from £72,500 in 2001 to £255,000 in 2021 and £275,000 in 2023, a published change of +279.3%. It is contextual evidence only—not a current affordability, revenue or customer-value estimate.
07 / Independent question set
Questions this evidence cannot answer on its own
These questions convert the profile-specific observations into falsifiable discovery work. They are not recommendations to create a service, location or page, and each needs direct user or behavioural evidence before it changes a website brief.
- 01
Before prioritising readability, keyboard access and assisted alternatives, which part of inclusive usability sessions and accessibility conformance checks would verify whether this population aged 65 or over observation matters to users in Chatham?
This question is traceable to population aged 65 or over at percentile 10.2 and a -2.7 pp profile-minus-peer difference, not to inferred local behaviour.
- 02
What evidence would show that the 2021 population contrast between Chatham and Stretford should alter content hierarchy and service-capacity assumptions, rather than remain background context?
The prompt combines one distinctive metric with the named classification comparator selected by the eight-metric method. It does not treat either record as search, lead or customer evidence.
- 03
Which real user task would justify changing mobile task speed, privacy explanation and channel continuity after seeing Chatham's population aged under 25 position and its +1.6 pp difference from Rochester?
Rochester is the constrained national reference and is classified as Nearer - Higher deprivation - Working; the question keeps an age-group share does not determine channel preference as an explicit limit.
- 04
For Chatham's large, coastal, residential built-up area, nearer to a major town or city classification, how should population aged 65 or over, 2021 population, population aged under 25 be tested as separate website hypotheses without turning the combined pattern into a claim about local demand?
Cross-check all three named comparisons—Gillingham (Medway), Stretford, Rochester—and define a user-research or behavioural measure for each question before changing navigation, page scope or conversion paths. The observations share one source but do not demonstrate causation.
08 / Practical brief
Website-planning recommendations for this evidence pattern
- 01
Make service boundaries explicit
Chatham is classified as residential. Explain delivery areas, remote or on-site conditions, response times and exclusions in visible copy. This reduces ambiguity for residents without inventing a local office or multiplying near-identical neighbourhood pages.
- 02
Differentiate from the nearby major centre
Chatham is nearer to a major town or city. Use specific offer boundaries, proof and response expectations to explain why the organisation is relevant; do not rely on a place-name heading or create a doorway that simply redirects users to a national service page.
- 03
Support quick comparison without hiding detail
31.8% of the recorded 2021 age-group total is under 25. Lead with concise task summaries and responsive performance, while keeping fees, eligibility, privacy and next steps available in the same journey rather than behind a social-only channel.
- 04
Prepare the content model for change
Chatham recorded +6.7% population change from 2001 to 2021 and +14.3% employment change from 2015 to 2024. Use owned templates, update dates, accountable content roles and measurable conversion events so the site can evolve without publishing unreviewed route permutations.
09 / Method and limits
What this profile can—and cannot—support
This is a Mosalio editorial interpretation of the ONS May 2026 dataset for BUA24 code E63012371. The source periods differ by metric; values are historical, not live. The profile deliberately excludes ONS experimental visitor-to-resident fields and makes no claim about search volume, rankings, customers, a Mosalio office or physical delivery in Chatham.
Mosalio does not claim an office, staff member, customer, or physical-delivery presence in Chatham.
Source: Office for National Statistics, Understanding towns in England and Wales, investigating socioeconomic trends, released . This Mosalio interpretation was first published on and last reviewed on .
Contains public sector information licensed under the Open Government Licence v3.0.
How this page was made: Mosalio applies one documented, deterministic transform to the validated ONS record, calculates the displayed comparisons, and renders the result from source-controlled data. It is an automated public-data resource, not individually commissioned local market research. A portfolio-level editorial-value review checks every profile's source identity, distinctive metrics, peer evidence, synthesis and planning questions before index eligibility can be enabled.
Analysis basis: Midrank percentile across all accepted England records; a higher percentile means a higher published value, not a better outcome. Root-mean-square Euclidean distance across eight clipped robust z-scores; population and 2023 house price are log-transformed before median/MAD scaling.