County code

Text

Indicates the FIPS code for the county or political jurisdiction of a given address. The first two digits represent the state code and the last three represent the county code. Known or imputed for 119.4 million addresses — 99.6% of the addresses Faraday knows.

At a glance

Coverage today
99.6%
Typical coverage
98.8%
Addresses with a value
119.4M
Share in largest category
2.4%
Most values come
from the address
When latest collection arrived
Nov 11, 2026

How the categories split

How values are spread across the records that have one. Use it to check that the attribute tells records apart: when one value holds nearly everyone, it will not separate audiences much. Categories are ranked by share, largest first. “All other values” groups the smallest into one bar.

Share by category

n = 119,443,307

Share of addresses in each category. 99+ categories, of which the 20 largest are shown, with 2.4% in the largest.

06037
2.4%
17031
1.5%
04013
1.3%
48201
1.2%
06073
0.8%
06059
0.8%
12086
0.8%
32003
0.7%
48113
0.7%
53033
0.7%
36047
0.7%
12011
0.6%
48439
0.6%
06065
0.6%
26163
0.6%
48029
0.6%
36061
0.6%
36081
0.5%
12099
0.5%
25017
0.5%
All other values
83.4%
Distinct categories
99+
Share in largest category
2.4%
Share in top 3 categories
5.1%

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.

  • 060372.4%2,862,297 addresses
  • 170311.5%1,744,750 addresses
  • 040131.3%1,542,225 addresses
  • 482011.2%1,474,346 addresses
  • 060730.8%1,013,086 addresses
  • 060590.8%932,141 addresses
  • 120860.8%905,649 addresses
  • 320030.7%846,490 addresses
  • 481130.7%823,785 addresses
  • 530330.7%783,607 addresses
  • 360470.7%777,061 addresses
  • 120110.6%757,660 addresses
  • 484390.6%725,538 addresses
  • 060650.6%721,949 addresses
  • 261630.6%718,209 addresses
  • 480290.6%696,157 addresses
  • 360610.6%661,143 addresses
  • 360810.5%603,870 addresses
  • 120990.5%599,288 addresses
  • 250170.5%589,470 addresses
  • 421010.5%567,702 addresses
  • 120570.5%566,694 addresses
  • 060710.5%564,307 addresses
  • 060850.5%552,812 addresses
  • 390350.5%544,336 addresses
  • 390490.4%534,290 addresses
  • 120950.4%524,465 addresses
  • 420030.4%512,713 addresses
  • 261250.4%512,307 addresses
  • 060010.4%503,174 addresses
  • 060670.4%495,547 addresses
  • 361030.4%484,786 addresses
  • 270530.4%477,797 addresses
  • 371190.4%464,331 addresses
  • 484530.4%462,712 addresses
  • 371830.4%461,246 addresses
  • 121030.4%428,357 addresses
  • 360590.4%426,771 addresses
  • 120310.3%406,301 addresses
  • 480850.3%396,607 addresses

Category shares over time

2.4% (largest)

The 5 largest categories, each followed across 12 collections. Estimated from a 1% sample of addresses.

Nov 2025Jan 2026Mar 2026May 2026Aug 2026Oct 2026Nov 2026
0603717031040134820112086

Coverage

How widely Faraday has this attribute, and how precise its values are. How many of your own records get a value also depends on how many of them Faraday matches. The state map shows where coverage is thin. Coverage over time shows whether it is growing or shrinking.

Coverage by state

Percentage of addresses in each state with a value.

Coverage over time

99.6% today

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

Jul 23Nov 24Mar 25Jul 25Dec 25Apr 26Nov 26

How we arrive at a value

Latest collection: 106,987,451 addresses

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 — 100%
Carried from what we know about the household at their address.
From geography — 0%
Not used for this attribute — no value is inherited this way.

Coverage, in context

Where 99.6% sits on the catalog’s own coverage range.

catalog min 0%max 100%

Higher coverage than 91% of address-level attributes in the catalog

Freshness

Whether the values reflect today. A long gap since the latest collection arrival means they may lag behind what is true now.

Collections

How recently this was collected, and how often a new collection arrives. Each bar is one collection, sized by how many addresses it carried. Gaps are real — collection is periodic, not continuous.

Nov 11, 2026
when latest collection arrived
Nov 1, 2026
data as of
2 days
since the latest collection arrival
monthly
median collection cadence
Nov 25Jan 26Mar 26May 26Aug 26Oct 26
Data as of

Change between collections

How much values move between collections. Income or life events should move; heavy change in something steady can mean noisy data.

0.0%

of addresses changed value between the two most recent collections — 17560.8× steadier than the catalog median of 23.5%.

Contribution ledger

21 ingestions

1 authority contributed since Jul 2023.

ObservedIngestedCountID
160,125,6688da6dd0a-54e7-4b8f-890d-fa6d79f07772
159,411,145eb9d843a-e90f-4c0f-a6a1-6407824973f5
158,647,96937a05688-5576-4b35-a37f-ed31a1298842
158,084,49662d317f2-489c-456e-b464-9cfab59f2deb
157,944,429f9d55800-7304-4043-b994-dabd7f12b3a8

Related attributes

Attributes whose descriptions are closest to this one.

Neighbors found Oct 2026.

Use it in the API

Send an email, phone, or address. Get County code back in real time.

  1. Add county_code to a project.
  2. Send an email, phone, or address to the project's append endpoint. The response carries County code for the matched person.
curl -X POST 'https://api.pro.faraday.ai/v1/projects/YOUR_PROJECT_ID/append' \
  -H 'Authorization: Bearer YOUR_API_KEY' \
  -H 'Content-Type: application/json' \
  -d '{
      "email": "jane.doe@example.com"
    }'
→ {"attributes":{"county_code":"06037"}}
Get it by APIAppend to a fileRead the API docs

Technical details

null in any row means the label does not apply, or is not recorded, for this attribute.

API name
The field to request through the API, and the key it comes back under in a payload.
county_code
Category
The catalog group the attribute is filed under.
fig/geography
Type · unit
The kind of value and, where it has one, its unit of measure. Counts on this page are in addresses, whatever the unit.
Text
Statistical type
How the values are meant to be read: a measured amount, one of a ranked set, one of an unordered set, or several from an unordered set. The chart's form comes from the published values; for categories without a rank prefix, this label decides whether they are listed in rank order or by size.
nominal
Allowed values
The full list of values, when the attribute has a fixed set.
null
Derivations
How the value is produced, each with its definition.
Derived
— the attribute is computed from other known or declared fields.
Observed
— the attribute is directly observed.
How values combine
How the values from the attribute's sources become the one value delivered.
Uses the first available of up to 2 source fields, in priority order.
Directionality
For ordered values, what a higher value means.
null
Deprecation
True when the attribute is being retired; choose another for new work.
false
API reference