SA3 · Swansea

SA3 broadband and area guide

Ofcom coverage, connection speeds, house prices and local data for 713 postcodes across 5 sectors in Swansea.

Gigabit

71%

Superfast

94%

Postcodes

713

Swansea's SA3 covers 713 postcodes with solid ultrafast reach at 73.9% but a notable 1.8% below the universal service obligation.

Broadband speeds in SA3

Share of SA3 premises by the fastest download speed available, averaged across all 713 postcodes in the district.

Superfast reaches 94.3% of postcodes. Ultrafast (300 Mbps or faster) reaches 73.9%, with gigabit slightly lower at 71.4%, suggesting cable gigabit presence alongside fibre networks. Fixed wireless offers supplementary reach at 21%. Real-world speeds split markedly: 73.9% achieve 300 Mbps or faster, 20.4% sit between 30 and 300 Mbps, and 1.8% fall below the universal service obligation. SA3 lags nearby SA2 (94.6% ultrafast) but outperforms several Carmarthenshire postcodes. The 1.8% below-USO cluster warrants targeted support. The postcode reflects uneven Swansea deployment city-centre and accessible areas well-served, rural pockets left behind.

Under 2 Mbps

<1%

2 to 5 Mbps

<1%

5 to 10 Mbps

<1%

10 to 30 Mbps

30 to 300 Mbps

20%

300 Mbps and above

74%

Source: Ofcom Connected Nations. Percentages are district-wide averages of postcode-level availability, so rows may not sum to exactly 100%.

Connectivity in detail

Below 10 Mbps USO

Premises unable to get the 10 Mbps universal service minimum

Fixed wireless

21%

Premises that can use a fixed wireless access service

Broadband by sector

SA3 splits into 5 postcode sectors. Coverage and prices can differ street by street, so open a sector below to find your exact postcode.

Sector	Postcodes	Superfast	Full fibre	Gigabit
SA3 1	115	71%	TBC	35%
SA3 2	61	93%	TBC	41%
SA3 3	87	99%	TBC	32%
SA3 4	243	99%	TBC	90%
SA3 5	207	100%	TBC	95%

All SA3 1 postcodes (115)

All SA3 2 postcodes (61)

All SA3 3 postcodes (87)

All SA3 4 postcodes (243)

SA3 4AA SA3 4AB SA3 4AD SA3 4AE SA3 4AF SA3 4AH SA3 4AJ SA3 4AL SA3 4AN SA3 4AP SA3 4AQ SA3 4AR SA3 4AS SA3 4AT SA3 4AU SA3 4AW SA3 4AX SA3 4AY SA3 4AZ SA3 4BA SA3 4BB SA3 4BD SA3 4BE SA3 4BG SA3 4BH SA3 4BJ SA3 4BL SA3 4BN SA3 4BP SA3 4BQ SA3 4BS SA3 4BU SA3 4BW SA3 4BX SA3 4BY SA3 4BZ SA3 4DA SA3 4DB SA3 4DD SA3 4DE SA3 4DF SA3 4DG SA3 4DH SA3 4DL SA3 4DN SA3 4DP SA3 4DR SA3 4DS SA3 4DT SA3 4DU SA3 4DX SA3 4DY SA3 4DZ SA3 4EA SA3 4EB SA3 4ED SA3 4EE SA3 4EF SA3 4EG SA3 4EH SA3 4EJ SA3 4EL SA3 4EN SA3 4EP SA3 4EQ SA3 4ER SA3 4ES SA3 4EU SA3 4EW SA3 4EX SA3 4EY SA3 4HA SA3 4HB SA3 4HD SA3 4HE SA3 4HF SA3 4HG SA3 4HH SA3 4HJ SA3 4HL SA3 4HN SA3 4HP SA3 4HQ SA3 4HR SA3 4HS SA3 4HT SA3 4HY SA3 4HZ SA3 4JA SA3 4JB SA3 4JD SA3 4JE SA3 4JF SA3 4JG SA3 4JN SA3 4JP SA3 4JQ SA3 4JR SA3 4JS SA3 4JT SA3 4JU SA3 4JW SA3 4JX SA3 4JY SA3 4JZ SA3 4LA SA3 4LB SA3 4LD SA3 4LE SA3 4LF SA3 4LG SA3 4LH SA3 4LJ SA3 4LL SA3 4LN SA3 4LP SA3 4LQ SA3 4LR SA3 4LS SA3 4LT SA3 4LU SA3 4LW SA3 4LX SA3 4LY SA3 4LZ SA3 4NA SA3 4ND SA3 4NE SA3 4NG SA3 4NH SA3 4NQ SA3 4NS SA3 4NT SA3 4NU SA3 4NX SA3 4PA SA3 4PB SA3 4PD SA3 4PE SA3 4PF SA3 4PG SA3 4PH SA3 4PJ SA3 4PL SA3 4PN SA3 4PP SA3 4PQ SA3 4PS SA3 4PW SA3 4QA SA3 4QB SA3 4QD SA3 4QE SA3 4QF SA3 4QG SA3 4QH SA3 4QJ SA3 4QN SA3 4QP SA3 4QQ SA3 4QR SA3 4QS SA3 4QU SA3 4QW SA3 4QX SA3 4QY SA3 4QZ SA3 4RA SA3 4RB SA3 4RD SA3 4RE SA3 4RF SA3 4RG SA3 4RH SA3 4RJ SA3 4RL SA3 4RN SA3 4RP SA3 4RQ SA3 4RR SA3 4RS SA3 4RT SA3 4RU SA3 4RW SA3 4RX SA3 4RY SA3 4RZ SA3 4SA SA3 4SB SA3 4SD SA3 4SE SA3 4SF SA3 4SJ SA3 4SL SA3 4SN SA3 4SP SA3 4SQ SA3 4SR SA3 4SS SA3 4ST SA3 4SU SA3 4SW SA3 4SX SA3 4SY SA3 4SZ SA3 4TA SA3 4TB SA3 4TF SA3 4TG SA3 4TH SA3 4TJ SA3 4TL SA3 4TN SA3 4TP SA3 4TQ SA3 4TR SA3 4TS SA3 4TT SA3 4TU SA3 4TW SA3 4TX SA3 4TY SA3 4TZ SA3 4UA SA3 4UB SA3 4UD SA3 4UE SA3 4UF SA3 4UG SA3 4UH SA3 4UJ SA3 4UL SA3 4UN SA3 4UP SA3 4UQ SA3 4UR SA3 4US SA3 4UT SA3 4UU SA3 4UW SA3 4UX SA3 4UY SA3 4UZ

All SA3 5 postcodes (207)

SA3 5AA SA3 5AB SA3 5AE SA3 5AF SA3 5AG SA3 5AH SA3 5AL SA3 5AN SA3 5AP SA3 5AQ SA3 5AR SA3 5AS SA3 5AT SA3 5AU SA3 5AW SA3 5AX SA3 5AY SA3 5AZ SA3 5BD SA3 5BE SA3 5BG SA3 5BJ SA3 5BL SA3 5BP SA3 5BQ SA3 5BR SA3 5BS SA3 5BT SA3 5BU SA3 5BW SA3 5BX SA3 5BY SA3 5BZ SA3 5DA SA3 5DB SA3 5DD SA3 5DE SA3 5DF SA3 5DG SA3 5DH SA3 5DJ SA3 5DL SA3 5DN SA3 5DP SA3 5DQ SA3 5DS SA3 5DT SA3 5DU SA3 5DW SA3 5DX SA3 5DY SA3 5DZ SA3 5EA SA3 5EB SA3 5ED SA3 5EE SA3 5EF SA3 5EG SA3 5EJ SA3 5EL SA3 5EQ SA3 5ES SA3 5ET SA3 5EU SA3 5EX SA3 5EY SA3 5EZ SA3 5HA SA3 5HB SA3 5HD SA3 5HE SA3 5HF SA3 5HG SA3 5HH SA3 5HJ SA3 5HL SA3 5HN SA3 5HP SA3 5HQ SA3 5HR SA3 5HS SA3 5HT SA3 5HU SA3 5HW SA3 5JD SA3 5JE SA3 5JF SA3 5JG SA3 5JJ SA3 5JL SA3 5JN SA3 5JP SA3 5JR SA3 5JS SA3 5JT SA3 5JU SA3 5JX SA3 5JY SA3 5JZ SA3 5LA SA3 5LB SA3 5LD SA3 5LE SA3 5LF SA3 5LG SA3 5LH SA3 5LJ SA3 5LL SA3 5LN SA3 5LP SA3 5LQ SA3 5LR SA3 5LS SA3 5LT SA3 5LU SA3 5LW SA3 5LX SA3 5LY SA3 5LZ SA3 5NA SA3 5NB SA3 5ND SA3 5NE SA3 5NF SA3 5NG SA3 5NH SA3 5NJ SA3 5NL SA3 5NN SA3 5NP SA3 5NQ SA3 5NR SA3 5NT SA3 5NU SA3 5NW SA3 5NX SA3 5NY SA3 5NZ SA3 5PA SA3 5PB SA3 5PD SA3 5PE SA3 5PF SA3 5PH SA3 5PJ SA3 5PL SA3 5PQ SA3 5PR SA3 5PS SA3 5PU SA3 5PX SA3 5PY SA3 5PZ SA3 5QA SA3 5QB SA3 5QD SA3 5QE SA3 5QF SA3 5QJ SA3 5QL SA3 5QN SA3 5QP SA3 5QQ SA3 5QR SA3 5RA SA3 5RB SA3 5RD SA3 5RE SA3 5RF SA3 5RG SA3 5RH SA3 5RJ SA3 5RL SA3 5RN SA3 5RP SA3 5RQ SA3 5RR SA3 5RS SA3 5RW SA3 5RY SA3 5SU SA3 5SW SA3 5SX SA3 5SY SA3 5SZ SA3 5TA SA3 5TB SA3 5TD SA3 5TE SA3 5TF SA3 5TG SA3 5TH SA3 5TJ SA3 5TL SA3 5TN SA3 5TP SA3 5TQ SA3 5TR SA3 5TS SA3 5TT SA3 5TU SA3 5TW SA3 5TX SA3 5TY SA3 5TZ SA3 5UA SA3 5UB

Best deals

Compare broadband deals in SA3

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Living in Swansea

One-fifth of SA3 postcodes occupy the 30 to 300 Mbps tier, indicating incomplete fibre waves. The below-USO cluster should trigger intervention eligibility checks.

Remote worker score

54/100

Connectivity and amenities for home working

Family score

50/100

Schools, safety and family amenities

Value score

50/100

What you get for the local price level

SA3 broadband FAQs

How does SA3 compare to Swansea's SA2 nearby?

SA2 is better connected: 94.6% ultrafast vs SA3's 73.9%. Geography likely explains the gap SA3 may be more rural or distant from the city centre.

What's the outlook for the 20.4% in the 30 to 300 Mbps band?

These postcodes are likely in intermediate fibre stages. Most should see upgrades to gigabit within the next 1 to 2 waves; check your provider's roadmap.

Am I likely to be in the 1.8% below 10 Mbps?

Probably not odds are 98.2% in your favour. But if you are, you nearly certainly qualify for universal service obligation support.

Is fixed wireless available as a backup in SA3?

Fixed wireless covers 21% modest but real fallback for some postcodes. Worth checking if your primary provider is slow or unreliable.

Neighbouring districts

SA2

754 postcodes

99% superfast

SA1

1,195 postcodes

98% superfast

SA5

743 postcodes

95% superfast

SA4

1,113 postcodes

93% superfast

SA6

755 postcodes

96% superfast

SA7

340 postcodes

96% superfast

Check your exact postcode

Every postcode in SA3 has its own page with broadband speeds, house prices, school ratings and crime stats. You can also compare providers for your address.

Data sources: Broadband data from Ofcom Connected Nations 2025 · House prices from HM Land Registry · Crime from Police.uk · See all data sources