Valencia · measured market survey
Hairdressers in Valencia
A uniform lattice of 823 circles, each 400 m across, counted against a complete city extract — never capped, never sampled. Captured 2026-08-23.
What the survey measured
| Reading | Value |
|---|---|
| Circles measured | 823 |
| Circles holding at least one hairdresser | 377 |
| Densest 400 m reading | 59 (117.4 / km²) |
| Survey extent | 6.0 km from the city centre |
| Captured | 2026-08-23 |
Circle counts overlap adjacent ground by construction, so they are deliberately never summed into a city total — the densest reading and the occupied share are the measurements.
Where the passing trade is, and hairdressers are not
The measured circles ranked by daily meal-time arrivals at the door against the competition counted in the circle — a heuristic for where to look, not a measurement of opportunity. Arrivals at the door are apportioned, not counted: the district's measured total shared out by where its places are. 571 circles ranked, 170 unmeasured at the door, 16 with nothing trading within reach; the top five:
| District | Hairdressers in 400 m | Arrivals/day at the door | In the district | Per 1,000 arrivals | Opportunity index |
|---|---|---|---|---|---|
| Poblats Marítims | 0 | ≈ 5,006 | 29,228 | 0 | 81 |
| Ciutat Vella | 5 | ≈ 10,736 | 34,165 | 0.47 | 78 |
| Algirós | 7 | ≈ 9,455 | 25,792 | 0.74 | 75 |
| Quatre Carreres | 8 | ≈ 9,745 | 34,863 | 0.82 | 74 |
| Ciutat Vella | 15 | ≈ 14,891 | 34,165 | 1.01 | 74 |
- ranked by the mean of two percentiles — a heuristic for where to look, not a measurement of opportunity
- arrivals at the door are apportioned, never counted: the district’s measured total shared out by where its places are — tested across districts, assumed within them
- unmeasured at the door, listed apart: districts beyond the surveyed ground, circles that outgrow their district, circles with nothing trading within reach
- the sweep samples denser where the category is commonest: these are the gaps found, not all the gaps
- arrivals are resampled to residents — foreign visitors under-represented, so a tourist-area gap may be the denominator’s blind spot
- scarcity measures absence, not viability: none of this category on little trade still ranks scarce — the residents count is the quick check
- Basado en datos abiertos MITMA
- the sharing key checked across 29 fully surveyed districts: ρ 0.96; a held-out district missed by ×1.4 typically — read a position, not a last digit
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