Skip to content
bythenumbers
Compare
Side by sideArea Measure

SG3 vs AL4

Overall measures differ. Gaps below are by category, not a ranking of the places.

This reflects published infrastructure and environmental data. It does not measure the people who live here, house prices as a marker of status, or safety.

Sign in to save this comparison
SG3

North Hertfordshire, East of England

84% used

The above measure is driven mainly by flood risk and air quality.

How this 79 was calculated

  • Schools

    79/100·24% of the measure

    89% of 9 rated schools nearby are good or outstanding

    A higher measure means a larger share of nearby rated schools are good or outstanding, and the closest school is nearer.

    Get Information About Schools, including Ofsted judgements, published August 2026. Measured for the SG3 postcode district.

  • Transport

    84/100·20% of the measure

    Knebworth Rail Station is 0.5 miles away

    A higher measure means a closer railway, metro or tram station and more bus stops within a ten minute walk.

    NaPTAN public transport access nodes, published August 2026. Measured for the SG3 postcode district.

  • Flood risk

    88/100·13% of the measure

    Nearest flood warning area is 1.4 miles away

    A higher measure means fewer designated flood warning and alert areas nearby, not more flooding. Live alerts and warnings are not part of this measure.

    Flood warning areas, published August 2026. Measured for the SG3 postcode district.

  • Broadband

    78/100·13% of the measure

    61% of premises can get gigabit broadband

    A higher measure means more premises can order faster broadband, not a slower connection.

    Connected Nations fixed broadband and mobile coverage, published August 2026. Measured for the SG3 postcode district.

  • Housing market

    74/100·10% of the measure

    77 recorded sales, median £435,000

    A higher measure means more recent recorded sales and more stable prices. It is not a higher house price.

    Price Paid Data, published August 2026. Measured for the SG3 postcode district.

  • Healthcare access

    80/100·8% of the measure

    Nearest GP practice 0.4 miles away

    A higher measure means a closer GP and hospital, and a shorter published waiting time when one is available.

    Organisation Data Service directory, published August 2026. Measured for the SG3 postcode district.

  • Air quality

    84/100·6% of the measure

    PM2.5 annual mean 7.1 µg/m³, modelled for 2023

    A higher measure means lower modelled nitrogen dioxide and fine particulate levels, not dirtier air.

    UK-AIR automatic monitoring network, published December 2023. Measured for the SG3 postcode district.

  • Council tax

    47/100·6% of the measure

    Most homes are band D (35% of them)

    A higher measure means a larger share of homes in bands A to C, which typically means a smaller bill, not a higher one.

    Council tax band and charge data, published March 2024. Measured for this neighbourhood.

Not counted for this area

Amenities, Green space. We could not obtain published figures here, so these categories were left out and the remaining weights scaled up to fill the gap. A missing dataset never counts against an area.

This reflects published infrastructure and environmental data. It does not measure the people who live here, house prices as a marker of status, or safety.

Area Measure v1.1, covering 84% of the published formula. See the full weightings and worked example.

Showing SG3

Category gaps

Browse topics

1 of 5

A higher measure means a larger share of nearby rated schools are good or outstanding, and the closest school is nearer.

20% of measure

AL4 measures 12 points higher, meaning stronger nearby school provision.

SG3

79/100

89% of 9 rated schools nearby are good or outstanding

A higher measure means a closer GP and hospital, and a shorter published waiting time when one is available.

7% of measure

SG3 measures 10 points higher, meaning closer healthcare and shorter published waits.

SG3

80/100Closer healthcare

Nearest GP practice 0.4 miles away

Higher is always the stronger published result on that measure. See the weightings. Missing categories are dropped from that area’s overall figure, not scored as zero. Crime and other context stay on each report.

Next step

Looking at homes in either place?

We do not list property. Each row opens portal searches within a mile of that postcode.

SG3

Within a mile

For sale

To rent

AL4

Within a mile

For sale

To rent