ἐν Χριστῷ ("in Christ") occurrences in Romans

Here is the complete count of ἐν Χριστῷ ("in Christ") occurrences in Romans, drawn directly from the Greek concordance data. Romans 14:18 is excluded since it reads τῷ Χριστῷ ("serves Christ") — dative of object, not the ἐν + dative union formula.

ἐν Χριστῷ / ἐν Χριστῷ Ἰησοῦ in Romans — 10 OccurrencesReference Greek phrase English gloss

1 Romans 3:24 ἐν Χριστῷ Ἰησοῦ "the redemption that is in Christ Jesus"

2 Romans 6:11 ἐν Χριστῷ Ἰησοῦ "alive to God in Christ Jesus"

3 Romans 6:23 ἐν Χριστῷ Ἰησοῦ "eternal life in Christ Jesus our Lord"

4 Romans 8:1 ἐν Χριστῷ Ἰησοῦ "no condemnation for those in Christ Jesus"

5 Romans 8:2 ἐν Χριστῷ Ἰησοῦ "the law of the Spirit of life in Christ Jesus"

6 Romans 8:39 ἐν Χριστῷ Ἰησοῦ "the love of God in Christ Jesus our Lord"

7 Romans 9:1 ἐν Χριστῷ "I speak the truth in Christ"

8 Romans 12:5 ἐν Χριστῷ "we who are many are one body in Christ"

9 Romans 15:17 ἐν Χριστῷ Ἰησοῦ "I have reason to boast in Christ Jesus"

10 Romans 16:3 ἐν Χριστῷ Ἰησοῦ "my fellow workers in Christ Jesus"

A few observations worth noting for your series:

• Six of the ten carry the full form ἐν Χριστῷ Ἰησοῦ (Romans 3:24; 6:11; 6:23; 8:1; 8:2; 8:39; 15:17; 16:3).
• Romans 6 accounts for two occurrences (Romans 6:11; Romans 6:23) — fitting given its dense union-with-Christ argument.
• Romans 8 alone contributes three occurrences (Romans 8:1; Romans 8:2; Romans 8:39), bracketing the chapter's movement from justification (no condemnation) to the law of the Spirit to the love from which nothing can separate.
• Romans 16:3–16 contains additional ἐν Κυρίῳ ("in the Lord") greetings (Romans 16:8, 11, 12, 13, 22) that expand the formula across the closing chapter's relational texture — those are worth tabulating separately if you want the full union-formula picture in Romans.