Micro id

micro_idGeographyText

Identifies the 5-digit Micropolitan Statistical Area code for the surrounding postcode, or NULL if the postcode is not in a micropolitan area. Known or imputed for 5,445 postcodes — 16.0% of the postcodes Faraday knows.

At a glance

Coverage today
16.0%
Typical coverage
16.0%
Postcodes with a value
5.4K
Share in largest category
2.0%
Most values come
from the area
Latest collection
Dec 31, 2018

How the categories split

n = 5,445

Share of postcodes in each category. 99+ categories, of which the 20 largest are shown, with 2.0% in the largest.

30100
2.0%
36837
0.8%
39060
0.8%
45860
0.7%
36300
0.7%
26860
0.6%
14140
0.6%
21700
0.6%
30940
0.5%
45900
0.5%
18180
0.5%
27460
0.5%
36460
0.5%
12300
0.5%
14660
0.5%
40700
0.5%
18500
0.5%
31940
0.5%
28300
0.5%
38460
0.4%
All other values
87.7%
Distinct categories
99+
Share in largest category
2.0%
Share in top 3 categories
3.5%

Every category

99+ categories

The chart above draws the 20 largest. Search here for one it does not. This list holds the 100 most common; rarer values are not named.

  • 301001.97%107 postcodes
  • 368370.81%44 postcodes
  • 390600.75%41 postcodes
  • 458600.72%39 postcodes
  • 363000.68%37 postcodes
  • 268600.62%34 postcodes
  • 141400.57%31 postcodes
  • 217000.55%30 postcodes
  • 309400.51%28 postcodes
  • 459000.50%27 postcodes
  • 181800.50%27 postcodes
  • 274600.48%26 postcodes
  • 364600.48%26 postcodes
  • 123000.46%25 postcodes
  • 146600.46%25 postcodes
  • 407000.46%25 postcodes
  • 185000.46%25 postcodes
  • 319400.46%25 postcodes
  • 283000.46%25 postcodes
  • 384600.44%24 postcodes
  • 395000.42%23 postcodes
  • 461800.39%21 postcodes
  • 259000.39%21 postcodes
  • 172200.35%19 postcodes
  • 131800.35%19 postcodes
  • 402600.35%19 postcodes
  • 407800.33%18 postcodes
  • 329400.33%18 postcodes
  • 327400.33%18 postcodes
  • 414000.31%17 postcodes
  • 103000.31%17 postcodes
  • 182600.31%17 postcodes
  • 371400.31%17 postcodes
  • 497800.29%16 postcodes
  • 367000.29%16 postcodes
  • 449800.29%16 postcodes
  • 117800.28%15 postcodes
  • 354200.28%15 postcodes
  • 339800.28%15 postcodes
  • 192600.28%15 postcodes

Coverage

Latest collection: 41,117 postcodes

Coverage by state

Percentage of postcodes in each state with a value.

Coverage over time

16.0% today

Share of postcodes holding a value at each monthly snapshot. A value carries forward for one year.

Dec 18Jan 25May 26

How we arrive at a value

Whether a value was observed on the person themselves, carried from their address, or estimated from the people around them.

On the person — 0%
Not used for this attribute — no value is inherited this way.
From address — 0%
Not used for this attribute — no value is inherited this way.
From geography — 100%
Estimated from other people in their postcode or region.

Coverage, in context

Where 16.0% sits on the catalog’s own coverage range.

catalog min 11%max 100%

Higher coverage than 1% of postcode-level attributes in the catalog

Freshness

How recently this was collected, and how often a new collection arrives. Each bar is the number of postcodes in that collection. Gaps are real — collection is periodic, not continuous.

Dec 31, 2018
latest collection
93 months 6 days
since the latest collection
Dec 18

Contribution ledger

1 ingestion

1 authority contributed since Dec 2024.

ObservedIngestedCountID
2024-12-312026-09-1641,117e2d21660…

Technical details

API name
micro_id
Category
fig/geography
Type · unit
Text
Statistical type
nominal
Allowed values
null
Derivations
null
Directionality
null
Deprecation
false

In a payload

{
  "attributes": {
    "micro_id": "30100"
  }
}